She recommends a harem

Following an intense session of physical intimacy, Dojun is blindsided by a statement from his girlfriend that defies all logic and expectation. Instead of the usual post-coital whispers, she drops a bombshell that leaves him reeling in shock: “Babe, have you ever thought about getting a fuck-buddy?” Far from being a test or a trick, it turns out to be the opening act of an extraordinary "Harem Project" specifically designed to handle her boyfriend’s inexhaustible stamina and high libido.

The ambitious goal is set: seven different women to fill every single day of the week, ensuring he is never left wanting. As the boundaries of their relationship dissolve into a provocative new reality, his girlfriend even takes the lead in scouting the candidates. With a mischievous glint in her eye, she suggests the perfect starting point for their scandalous venture: "First... how about the girl next door who always masturbates while eavesdropping on us?"