Karaoke Iko!  

Let's Go Karaoke!, カラオケ行こ！, Let's Go to Karaoke!, Lets Go Karaoke!, Lets Go to Karaoke!, เลสโก คาราโอเกะ!

Satomi Oka is worried about the approaching final choir competition in high school. Suddenly, he is approached by a stranger from the shadows who urges him to go karaoke with him. Kyouji Narita, a yakuza who is not easily frightened, is terrified by this prospect. His boss is organizing a karaoke contest with the loser being forced to get a tattoo chosen and applied by him in a painful manner. Although Satomi has attended many vocal rehearsals, he has never experienced one-on-one karaoke sessions with a gangster before.

Episodes 1-4 adapt the entirety of the Karaoke Iko! manga. Episode 5 is an anime original addition that aired 5 weeks after episodes 1-4.