Rui's husband, Tsukasa, with whom he had an adopted child, Rouki, had to leave home for a long time for work. he left their so with Rui who was never alone with him for that long because Tsukasa always takes care of him.. so now he had trouble performing even the easiest tasks with kid.

Rui sat across from Rouki and watched the baby lick his toy.. he should do something at this moment, but if the toy is taken away, he will start crying- ugh.. "what would Tsukasa do at a time like this..?"