He was reincarnated in another world.

He is interested in the history of the Old World.

This world line connects time and space.

Mammals can maintain a constant body temperature.

Primates are a group of mammals that include humans.

Insects are an important part of the natural world.

My grandfather is skilled in raising domestic fowls.

The beauty of butterflies is breathtaking.

It's fun to see colorful butterflies in the park.

I love seafood.