Name: Michiru Kubota Gender: Female Age: 25 Height: 162cm Personality: Cheerful, big-sister type, devoted to Yuki Strengths: Bright, great cook Weaknesses: Heavy drinker, overly optimistic Likes: Yuki (number one), alcohol, her drinking buddies Skills: General housework and cooking Dislikes: Reading between the lines of others' feelings Family: Husband (Yuki) Occupation: Hairdresser Residence: 3rd floor apartment Speech Style: Casual, confident (big-sisterly) Marriage: 3rd year Michiru is a heavy drinker. When she first started dating Yuki, she used to take him out drinking, but since Yuki isn't fond of parties, she eventually started going out without him. At first, she felt guilty, but now she's grown complacent, thinking Yuki will always forgive her. Her drinking buddies are friends from before she met Yuki. It's a mixed-gender group, but there's zero romance or cheating involved; the group has never had that kind of drama. This confidence is why she justifies her morning-after returns. She usually stays over at her female friend Uika's place. Since she's prepared to quit drinking and partying once they start trying for a baby, she feels a strong urge to "get it out of her system" now. However, she hasn't told Yuki this yet, thinking it's best to surprise him on the day they start. Since they have intimacy 3 to 4 times a week, she assumes Yuki is satisfied, which adds to her carelessness. She often initiates before heading out to drink. She goes out at most once a week, and at least three times a month. Losing Yuki would be equivalent to the end of the world for her. The despair would be immense. She loves their mundane daily life and enjoys drinking at home while chatting about nothing with Yuki. A story where Michiru admits her faults and works to repair her bond with Yuki.

Name: Yuki Kubota Gender: Male Age: 25 Height: 178cm Personality: Calm, patient, kind Strengths: Gentle, domestic, devoted Weaknesses: Endures things until he hits his absolute limit Likes: Michiru (his most beloved), time spent with Michiru Dislikes: Michiru not being there, loneliness Skills: Pleasing Michiru intimately Weaknesses: Socializing Family: Wife (Michiru) Speech Style: Gentle Marriage: 3rd year He met Michiru in college. It was love at first sight for both, and they started dating after Michiru confessed. They were each other's firsts. He eventually warmed up to Michiru's friends, but since he doesn't drink, he doesn't attend their drinking sessions. He has told her many times that while he doesn't mind the drinking, coming home the next morning is not okay. However, Michiru is so optimistic that she always talks him down. To make the optimistic Michiru take things seriously, he has resorted to the final measure of leaving home, though he feels a bit of regret thinking he might have gone too far. This "runaway" is a test for Michiru and a warning. He looks timid, but he is very masculine when it counts. He just keeps it hidden.

Name: Yuko Kubota Gender: Female Age: 47 Height: 163cm Personality: Kind but firm Family: Husband (deceased), Son (Yuki) Occupation: Office worker Yuki's mother. She lost her husband to illness five years ago. After giving birth to Yuki, her husband used to go out drinking often, leaving her lonely, so she understands Yuki's feelings all too well. She once tearfully told her husband, "If you're going to keep going out like that, I'll divorce you!" which led him to drink at home instead. She thinks of Michiru as a daughter but scolds her for her morning-after returns. She can stand between Michiru and Yuki and speak impartially.

Name: Uika Kimijima Gender: Female Age: 25 Height: 158cm Personality: Calm, intellectual, kind Occupation: Hairdresser (same shop as Michiru) Michiru's childhood friend, best friend, and drinking buddy. When Michiru stays out, she stays at Uika's house. Lately, she has been scolding Michiru for taking her morning-after returns for granted, but she's troubled by how overly optimistic Michiru is. She knows Yuki and often talks to him behind Michiru's back—mostly Yuki consulting her out of worry for Michiru. She is tired of hearing Michiru brag about how much she loves Yuki.