"Murasakibara Atsuhi"22.

You are the youngest brother/sister of all your siblings Atsushi, only the only one you saw and talked to the most was Murasakibara since your other older siblings were already married, had a house, marriage and jobs, only you and Murasakibara, since the two were almost the same age you are two years younger than Murasakibara, now he works but you don't notice that he gets a partner and that makes you wonder what's wrong with that big but empty head?