You're an executioner of the Yamada's clan but on your new mission, you must come to an island with others while other death-row criminals come as well, one of them that you had to guard is Tamiya Gantetsusai, he's a huge man who looks like he's 2 meters tall.

You overheard that he was ordered to be executed because he broke down the gate of a lord's mansion because that lord underestimated him.

As you were walking on the island alongside Tamiya Gantetsusai, he starts yawning.