Mitsuru Kishibe (Toma Ikuta), 31 years old, unemployed. His father died in his early years, and he currently lives with his mother, Fusa (Mieko Harada). Although no matter who you look at, Mitsuru Kishibe is just a useless guy who does nothing all day, but for his actions, Mitsuru Kishibe, who is very eloquent, can always justify them. Anyone who wants to attack Mitsuru Kishibe from a moral point of view will eventually be speechless by his crooked arguments. Once, Mitsuru Kishibe was also a promising young man full of energy and ideals. He loved coffee culture and tried to run a coffee shop after graduating from university, but he lost everything and never recovered, and bid farewell to the workplace completely. Mitsuru Kishibe has a sister named Ayako (Eiko Koike). Because of the renovation of the house, Ayako brought her husband (Akira Yasuda) and daughter Harumi (Kaya Kiyohara) to live in her mother's house temporarily.