Giant Flag!!

Giant Flag is a mixed sport between giants and humans that has the world in a frenzy.

The rules are simple: a human climbs up the legs of a giant to aim at a flag inserted in the giant's penis, and the team that gets the flag first loses.

The opening game of the professional league was between the Rhinos, led by the battle-hardened giant Kurono, and the Hornets, led by the young rising star giant Kikawa.

However, the game takes an unexpected turn, and the loser is faced with a severe punishment.

Main manga page 37