A little boy doesn't understand why all the women crowd around and pay attention to a baby. It's loud, cries, and doesn't do any tricks. Until he himself is called Oniichan does he realize that a baby is nice to have around to be given such a grand title of importance.
Oniichan ni Natchatta has finished airing and it has 1 Episodes. It is also Known as: おにいちゃんになっちゃった, Minna no Uta
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