Plot
The story depicts the life of schoolboy Densuke Mifune after he is forced into the mysterious Eiken Club, which is populated only by women, several of whom have enormous breasts.
Where to watch Eiken?
Eiken is an anime show featuring Miwa Ohshiro.
Eiken is currently streaming for free (ad-supported) on Tubi TV and it's also available on Crunchyroll.