He continues to search for the elixir of eternal youth.

Sumo-san is my best friend.

He swung the flamberge around.

Japan during the Edo period was governed by the shogunate.

I think that person is what you call a 'chuunibyou'.

He completely memorized the alphabet.

Hafnium is a chemical element with atomic number 72.

A wolf is prowling around in the forest.

Fermi is an old unit and is not used much now.

The size of this atom is about 100 fermi.