The Family Circumstances of the Irregular Witch

207-year-old witch Alyssa finds an abandoned human baby and raises her as her daughter named Viola. 16 years later, Viola becomes so tall and buxom that people mistake her for being Alyssa's mother. Alyssa worries Viola might become a rebellious teen and considers becoming strict, but due to her doting nature decides against it. Men are drawn to Viola but she believes they are lusting for Alyssa and scares them away. Viola later summons a phoenix as a pet. Alyssa worries Viola might start dating, but not only is Viola uninterested she plans to stop Alyssa from dating too, even summoning a golem to keep men away.

Viola decides to get a familiar but cannot decide what kind; while Alyssa does not have one, Viola's honorary aunts Giriko and Luna have a snake and a harem of masochistic men, respectively. As familiars take a lot of responsibility, Viola decides to raise a flower first as practice. Phoenix, pouting over them wasting his time, becomes Viola's familiar anyway and develops a rivalry with the flower. Alyssa becomes fond of Phoenix as he acts more like a cat than a bird.

Viola asks her honorary aunt Lira for the poison to defeat her enemies, causing Lira to fondly remember Viola as a baby. Viola had a lot of magic for a human so Alyssa knew she had to raise her, but it was Lira who breastfed her. As they were both first-time parents, Lira kept Alyssa from overthinking herself into panic attacks while Alyssa stopped Lira from going overboard with enthusiasm. Seeing Alyssa and Viola now makes Lira wonder about her son, a rebellious teenager often in need of punishment.

An elf merchant named Fennel has a crush on Alyssa and is thus the enemy Viola tries to poison. Alyssa is oblivious to his feelings and treats Fennel like a younger brother. Fennel is determined to escape this but is prevented by his cowardice and by Viola sending Phoenix to "accidentally" set him on fire at inopportune moments. Fennel plans to somehow co-exist with Viola but on his next visit is tricked into playing a rigged carnival game, with the prize being an illicit photograph of Alyssa. He later realizes how rigged the game was.

Giriko and Luna visit with a magic photo album that displays memories, allowing Viola to see them as children. Viola sees they allowed their childhood hobbies of gardening, tarot cards, and crafting to become their careers of herbalist, fortune teller, and magic item engineer. Viola wonders what her career could be since her only hobbies are Alyssa and birds. However, when she accidentally sees memories of Luna's masochist harem, Luna and Giriko flee before Alyssa can punish them.

Viola catches a cold. Phoenix offers his immortal body to make chicken soup, an idea Alyssa swiftly rejects. Viola refuses to sleep knowing from experience a fever gives her nightmares that manifest in the real world, causing trouble for Alyssa. She also begins ex-spelling, a process where ill witches vomit pure magic. Fortunately, it is sweet-smelling and evaporates cleanly. Phoenix eventually puts her to sleep to recover. Viola dreams of her birth mother but forgets as soon as she awakens. Viola recovers but Phoenix catches a cold through his familiar contract with Viola. Alyssa remembers when Viola was 6, she summoned a water spirit in her sleep, leading to her fascination with animals and summoning magic.

Glind, an orcish craftsman, asks Fennel's help in finding a girlfriend. Fennel arranges a blind date with Viola, who agrees but makes Fennel suffer first. As her obsession with Alyssa comes first, she decides she and Glind can only ever be friends. Fennel pushes Glind to not give up, selfishly hoping if Viola takes a lover, he can get closer to Alyssa. Viola overhears this and feeds Fennel to an elf-eating monster. Glind worries Viola is too scary to date.

Alyssa agrees to babysit an egg belonging to the Lizardkin couple Gita and Malak. Phoenix elects not to be involved since egg-laying species are sensitive about who can touch their eggs, so he instructs Viola to do her best as a big sister. Since unhatched babies do not require feeding or cleaning, Viola settles for talking to them. The parents return with a gift, an ostrich egg boiled in a hot spring, a sort of traditional Lizardkin joke. Alyssa invites Fennel to supper, but his romantic dreams are dashed when he falls into Viola's teleportation trap and is fed to the elf-eating monster as revenge for the blind date.

Fennel visits Alyssa alone while Vola is out, but finds Glind there on Viola's orders to foil Fennel's romantic plans. Glind is enamored of the elves' village, said to be populated by beautiful elf maidens with new magic and excellent archers. Fennel reveals the place is actually so boring young elves leave as soon as they can. Those who stay are the elderly obsessed with making potions, and archery is about the only available hobby. Feeling nostalgic for home, Fennel asks Alyssa to visit it with him. However, his invitation is ruined when Viola overhears this.

Alyssa and Viola assist Pondo, Lira's husband, in harvesting sweet potatoes which unfortunately have come alive since he used one of Giriko's potions to grow them faster. Pondo wants it kept secret from Lira since the potatoes are rapidly evolving in humorous but deeply worrying magical ways. Lira finds out anyway and after punishing Pondo, Giriko returns the fields to normal. Several days later, Alyssa discovers Viola used a similar potion in their garden, resulting in giant potatoes fighting each other for dominance. After they destroy the garden, Giriko eventually fixes everything.

Alyssa and Viola are visited by Hip the fairy, who asks them to stop his brother, Sweet Cheeks. At the home of the noble Anna, the flowers in the garden have stopped growing due to Sweet Cheeks. When confronted, Sweet Cheeks reveals that he believes Anna's fiancé, Torino, is only using her for her money and is doing his best to stop the wedding. While spying on Torino, Viola discovers that despite his playboy appearance, he is actually a very nice person. Viola later scolds Sweet Cheeks for misjudging Torino and insists he apologizes to Anna. However, normal humans like Anna cannot see fairies so she has no idea Sweet Cheeks even exists. Phoenix reveals he has a spell that will allow Sweet Cheeks to be visible, but after learning Anna believes her father's spirit lives in the garden, Sweet Cheeks chooses not to ruin this by revealing himself. He restores the flowers so Anna will believe her father's spirit approves of Torino, and thanks everyone for helping him let Anna go. Alyssa is saddened because as a witch, she will one day outlive Viola and have to say goodbye.

Viola takes up baking but her snake cookies all end up looking like giant poops. Alyssa tries to help by baking new ones in different colors, but the effect goes from disgusting to comical. Since they do taste delicious, everyone eats them anyway to not upset Viola.

Alyssa recalls a childhood bedtime story of the Sandman. Viola reveals Sandman is a real fairy who coincidentally has just crashed through her window due to falling asleep while flying. Sandman has recently been struggling to sleep ever since his wife left him, plus he is getting older with aching joints. Viola offers one of Phoenix's healing spells, but Sandman is too scared of Phoenix. Alyssa offers hot milk but Sandman rejects this as hot milk is used by another sleep fairy, Ole Lukøje, whom Sandman does not get along with. They decide to take him to a real doctor for treatment, plus he decides to try to talk to his wife. For their help, he gifts Alyssa a bottle of his sleeping sand. Giriko insists on buying it, but as it is worth millions, Alyssa is unable to sleep for a week due to her worrying about thieves and burglars.

Luna asks Alyssa for cooking lessons, which Alyssa refuses due to the danger. As the magical price of her powerful fortune telling, everything Luna cooks is either surreal or a disaster. Being immortal, Phoenix volunteers as food taster and explosively transforms into a chicken version of himself. As compensation, Luna shares her prediction a certain someone will soon visit, which terrifies Alyssa.

A week later, Phoenix is still a chicken so Alyssa and Viola take him to see nurse sisters Sheeta and Kicla. Kicla is a mad scientist researcher who, having never seen a phoenix before, is determined to dissect him. Sheeta gets her under control allowing the doctor to examine him, who determines Phoenix has been constipated since eating Luna's food. After successfully going to the bathroom, Phoenix returns to normal.

A series of short sketches of popular fairy tales is shown with everyone playing different roles. Sketches include Alyssa White, The Golden Axe, the Silver Axe and the Third Ack, Orc and the Beanstalk, The Little Musclemaid, Alyssa Riding Hood, and due to a disagreement between Viola and Fennel, Alyssa Riding Hood Take 2.

Viola notices Alyssa is not herself following news of the upcoming visitor but neither Giriko, Luna, or Lira will tell her. At Lira's shop, Viola encounters a handsome, playboy sorcerer looking for Alyssa. He flirts with Viola shamelessly until Lira punishes him and Viola secretly poisons him with laxatives. Viola reveals Alyssa is her mother, causing the shocked sorcerer to reveal he is Auri, Alyssa's father, who was unaware he had a granddaughter.

Alyssa arrives and Auri settles down after realizing Alyssa adopted Viola and is still unmarried. Alyssa claims she kept Viola secret so as not to expose her to Auri until she was old enough to resist being influenced by his irresponsibility and bad behavior. Alyssa reveals Auri is technically her uncle, her mother's brother, who co-parented her as a father figure. She allows him to stay one night until Lira reveals he had flirted with Viola, so Alyssa throws him out. Alyssa reveals her mother did happily visit Viola once as a baby. As the laxatives kick in, causing Auri to have to leave quickly, he cannot shake the feeling he has seen a similar face to Viola somewhere many years before.

Lira and Pondo's son refuses to leave his room. Worried Lira will find out, Pondo enlists Viola's help. He eventually admits he was too embarrassed by his messy hair to be seen in public. Stunned by such a stupid reason, Viola fetches Lira. Later, from his hospital bed, he admits he did not want Viola specifically to see him, suggesting he has a crush on her, to Pondo's delight. Meanwhile, the oblivious Viola brews a potion to cure messy hair.

Gita's egg hatches so everyone goes to the park so Gita can make friends with other new mothers. There, Lira encounters Lady, her childhood enemy. This was caused by Lady's tsundere personality as she has secretly wanted to be Lira's friend since they first met. She impulsively challenges Gita to a park debut contest with her friend Birdy, who is also a first-time mother. After speaking with as many parents as possible, Alyssa declares the contest a tie and forces both sides to apologize, hinting she figured out Lady's tsundere personality. Unfortunately, Lady panics and slaps away Lira's offered handshake. She then runs away, leaving everyone feeling that making friends might be harder than they thought.

Alyssa and Viola go shopping, leaving Phoenix in charge of Viola's other familiar, Toxic Koala. In Viola's absence, Toxic Koala becomes wantonly destructive, completely destroying the house in a tantrum against Phoenix's orders as senior familiar. Alyssa and Viola return and blame Phoenix for not controlling his junior familiar. Outraged at this injustice, Phoenix quits as senior and throws his own tantrum.

Phoenix overindulges and becomes fat. Kicla's suggestion she surgically remove his excess flesh for scientific study is rejected. Instead, she creates a sensible diet and exercise program for him. One month later, Phoenix loses so much weight he shrinks to the size of a robin, requiring Alyssa and Viola to fatten him back up to his normal size.

Desperate for romantic advice, Fennel and Glind pay the fine to free Auri from prison after he was caught cheating at a casino. Auri claims his skill with the ladies is his empathy, having once been turned into a woman for two weeks by his sister. He therefore decides to turn them both into women, despite their protests. Alyssa overhears the commotion and sets Toxic Koala on Auri as a punishment for his lechery.

Auri complains about Viola being kept secret for 16 years by Alyssa, Luna, Giriko, Glind and Fennel. Viola is surprised Auri is fine with Fennel being in love with Alyssa, though Auri admits this is only because Fennel has zero chance of seducing Alyssa. Despite feeling slightly guilty, Alyssa blames Auri for staying away so long waiting for an arrest warrant to expire after seducing another man's wife. Viola expresses interest in meeting her grandmother, though Alyssa explains she is mysterious, and impossible to keep track of. She met Viola once as a baby and reassured Alyssa she would be a good mother. Luna and Giriko try to cheer Auri up with Viola's baby pictures and funny stories, but this worsens his mood, so he bullies Fennel. Fennel can only recall stories of Viola causing him pain and suffering. Auri recalls Alyssa struggled to learn magic as a child and fell ill frequently but acted mature for her age. Phoenix does not understand the problems everyone is discussing, since to him everyone seems like a child. After everyone leaves, Alyssa and Viola go shopping as normal and Alyssa is exasperated people still mistake Viola as being her mother.