One morning, as Nikomaru is getting ready for school, Akitakomachi shows up at his door carrying a lost  baby named Rinx Kobayashi. Akitakomachi says he found the baby in a rice cooker on his way to school. The two of them decide to take care of Rinx Kobayashi together, and through much trial and error, they try their hardest to be good parents.
Feels a little lonely, huh?
.أشعر بالوحدة قليلاً
Bist du jetzt auch so einsam?
La extrañaré mucho.
La echaré mucho de menos.
Ça me rend un peu triste…
È un po' triste, eh?
Ficou meio solitário agora, né?
Так одиноко, да?