That's ... more literally true than you may have intended:
White Day was first celebrated in 1978 in Japan. The National Confectionery Industry Association started it as an "answer day" to Valentine's Day on the grounds that men should pay back the women who gave them chocolate and other gifts on Valentine's Day.
Nee-san said that's what White-day is...It's the return for Valentine's Day!Thank you! Nagatsuki!
I'll treat it as a heirloom!This is...No, it should be eaten. I have something I want to give you.Ah, right, Kongou.
