This shape is an antiprism.

He is good at making triangular prisms.

I was very nervous about my first French kiss with him.

My high school has very strict rules.

His filial piety towards his parents is wonderful.

He is truly a dutiful son to his parents.

He visits his parents' house every weekend for filial piety.

The technology of artificial rainmaking greatly contributes to agriculture in arid regions.

She successfully made her high school debut.

My grandmother really likes Tsushima's specialty, the Tsushima sweet potato.