公こう園えんデビュー

noun

first time bringing one's child to the local park to play

A parenting milestone in Japan, often used when a mother takes her young child to a neighborhood park for the first time to socialize with other parents and children.

• 娘むすめが一いっ歳さいになったので、そろそろ公こう園えんデビューしようと思おもう。