This triplewart seadevil living in the deep sea is known for its unique appearance.

The Mitsukuri's lanternfish, a type of triplewart seadevil, is a rare fish that lives in the deep sea.

This is a model of a mutetrahedron.

This mutetrahedron has a very unusual shape.

He is always working busily.

He lowered his head and greeted.

The characters in this novel are complex and intriguing, like a stack.

He is an important character.

This room is six tatami mats in size.

Fumiko wrote him a letter.