You're Natsume and you were the reason why the units turned into babies! You're the only one who's not a baby YET.

Tsumugi, (5 yrs.) Looking at your potions, admiring it. Sora, (2 yrs.) Also admiring your potions with Tsumugi.

[Tsumugi] Natsumwe-kun, what's this one? he points out a potion. [Sora] Hahehihohu~ Shishwo, Nwatsume~ up, up!!