えちぇろす

Games nowadays are a huge waste of time and can't be played comfortably; If you're busy and wants a game that can be finished in a short time, then this one is for you.

Play and finish together in a short time, the action and story are all light. Easy! Very Easy? An action game for you!!!!!

Sister Seto Aiko suddenly stoods in front of the main character Agisawa Ryuuto and makes him do her part/favor of defeating the alien parasite invading the female human brain. He initially refused but agreed with her after being lectured by the said sister not only on how to fight but also more like this.