not necessary to; don't have to

Expresses gratitude or relief for something that happened in the past, a choice made, etc.

If only ~

It's good / okay to... / is fine

to appeal to the court, police or other public place, and compete which one is correct publicly; to bring a lawsuit

summer festival

The Japanese festival of Hina matsuri, held on 3 March.

A ceremony celebrating the beginning of spring.

"balse festival": the mass tweeting of "balse!" that takes place when Castle in the Sky is broadcast on television

festival