Kattobi! Takuhai-kun is a strange game on the PC Engine where the player takes the role as a delivery boy. Arino sits on his trusty moped and hopes to get the package delivered in time, but many obstacles are in his way.
In celebration of the 150th episode of the show, Arino tries out his 4th PS1 challenge, Parappa the Rapper. It is the first music game to be challenged in the show. However in order to master a game about rap, he must become a rapper.