HUNTC-522 - Only the virgin mob student levels up! Lucky harem orgy! Suddenly, the words 'Level 0' appear in my field of vision! If I see a girl's panty shot, it goes to 'Level 1'! Perhaps leveling up through erotic experiences? As the level continues to rise...

The words 'Level 0' appeared in the field of vision of an unremarkable high school student. If I see a girl's panty shot right in front of me, the level changes! Perhaps... leveling up through erotic experiences?! Furthermore, repeatedly having lucky lewd experiences causes skills to continue to rise! I've become popular with the girls in my class who used to think I was creepy! I can do it! I can keep doing it! What is this? The only thing I know is that I am now invincible! That's all, I've ranked up to the top-tier male. Loss of virginity → forced sex → anal sex → harem orgy! In a short period of time, the sex level has skyrocketed to cheat levels, entering an overwhelming state! My current stamina and erotic techniques far surpass the popular guys at school, and women come to me with zero effort! If I level up any further...