Shizuku Futakawa is used to being abandoned. So far, he's been abandoned by his mother, his abusive father, and his stepmother. He doesn't have time to wallow, though, because he's responsible for his younger stepbrother Kikutaro. Determined to be a good big brother, Shizuku sets out to ensure a successful future for Kikutaro to the best of his ability.

One day, he returns home and mistakenly thinks that his little brother has been kidnapped by his next door neighbor, Tsujido. Seeing that the brothers are struggling on their own, tough-looking and aloof Tsujido starts helping out and cooking warm meals for them. For the first time in his life, Shizuku gets a taste of what it's like to be cared for...