My curfew is at 10 o'clock.

This rock is jyamongan, in other words, serpentinite.

This piece of art is made of serpentine.

He is interested in heraldry and is researching his family's coat of arms.

This cold is unbearable.

He is a disciple of a famous painter.

He was wearing a kimono with a mon proudly.

It's no big deal if he's a little late.

He understands the importance of learning.

He is majoring in psychology.