ツーブロック

noun

two-block haircut; undercut

A hairstyle where the sides and back are cut very short or shaved, while the top is left longer. Often associated with K-pop and trendy styles.

from English two-block

• 最さい近きん、ツーブロックにしたんだ。

  I recently got a two-block haircut.

• あの俳はい優ゆうのツーブロックがかっこいい。

  That actor's undercut looks cool.