HMN-875 A Room You Can’t Leave Unless You Cum Inside: Four Men And One Woman Are Gathered Together In A Small Space, Locked In With The Promise That Their Debts Will Be Wiped Out. Each Time They Ejaculate, The Amount Of Debt They Have To Repay Decreases, And They Can Leave The Room. Because There’s Only One Woman, She’s Repeatedly Subjected To Unprotected Sex. (Rei Kuroshima) .