Teisou Gyakuten Sekai de Yuiitsu no Otoko Kishi no Ore, Onna Kishi Gakuen ni Nyuugaku Shitara Nazeka Eiyou Atsukai Sareta: Zetsurin Skill de Harem Mu…

[MangaDex]

 

[weleasewodger]

The story is written like crap but the tiddies are magnifique

 

[raze2012]

Okay, I'm a sucker for "horny girl fendom fantasy".

Though I'm curious what he meant by "drained". Does he actually sap power from his partner, or it is more like a "mana transfer" where the partner feels a little tired by recovers naturally? I guess if he could drain the Sister for years then it's the latter?