E-cup hidden giant breasts, Natsukawa Umi is a graduate of a comedy training school. At the time, she was active as a solo comedian and is now seriously thinking of a routine for her manzai stage debut. In the middle of it, she includes a scene with her male partner in a crab-leg riding position sex to check their physical compatibility, but the director even barges in for a late-night threesome! The next day, she's back at it with one hand on the mic for a standing back position! Will her manzai be a success!?