Yaoi/ shounen ai / BL Isekai

Boud to QT system, he's tasked to seduce overlord in various world and prevent their blackening. Can the captive canary win against green tea and white moonlight.

Classical so far. Fierce MC kinda forced to play White lotus for mission sake. Kinda Marie Sue. All MLs are actually the same soul (of course). System don't have much presence except giving affaction point progression and some world lore and character tips (not a cold robot either)