Since the flashback when they were still kids, Yuki and Mafuyu were always together and Hiragi was left out until Shizu came. And the flashback where Mafuyu and Yuki got into a little fight, Shizu was the one narrating, he was the one who noticed every little things abt Mafuyu and Yuki *Shizu seemed uninterested of everything aside from music, and only had his eyes on to Hiragi*. To sum it up, Hiragi was already lonely even before Yuki died, and Shizu thought that he was lonely because Mafuyu and Yuki is in a romantic relationship, and even after Yuki died.
Hiragi was lonely too, all along.







HIS THROAT MAY RESTS IN PEACE