It's "White Day," the day that boys who received chocolates on Valentine's Day give their return gifts to the girls. And Momiji has one big surprise gift for Tohru!
Why didn't we catch on?
Wieso ist mir das nicht aufgefallen?
¿Por qué no nos dimos cuenta?
Pourquoi on n’y a pas pensé ?
Por que não percebemos antes?
Почему мы раньше не вспомнили?