Kou Sennen is my best friend.

Photochemistry is a branch of science that studies how chemical reactions proceed under the influence of light.

The photoelectric effect is a phenomenon where a material emits electrons after absorbing light.

We are aiming to kill two birds with one stone with this plan.

The Atlantic puffin is one of the most commonly seen birds in the North Atlantic.

He was considered the wisest among the ignorant, like a bat in the land of the blind.

The Papua fire-eating bird, with its unique appearance, is a bird you won't forget once you see it.

He continued to hide his talents as if to hide his light and conceal his tracks.