Chissoku mazona suiei-bu kōhai chanto mizuzeme o yūgi suru ohanashi

Rikka Uonuma, a junior in the swimming club, engages in extreme underwater breath-play and bondage with her senior. She is suspended upside down in the pool, pushed to her limits, and given air via a tube or mouth-to-mouth while submerged. The session includes underwater paizuri and ends with her resting in a warm bath while still bound.