The story of a virgin high school student leveling up all by himself! Lucky harem orgy! Suddenly, the words "Level 0" appear in my field of vision! Seeing girls' underwear turns me into "Level 1"! Is it leveling up through erotic experiences? As the level continues to rise... HUNTC-522

The words "Level 0" appeared in my field of vision, a seemingly ordinary high school student. My level changes whenever I see a girl's underwear! Could it be… leveling up through erotic experience!? And with a lucky series of erotic encounters, my skills keep rising! From being hated by the girls in my class to being incredibly popular! I can do it! I can do so much! What is this? The only thing I understand is that I'm invincible now! I've just leveled up to the highest level of male prowess. Losing virginity → unprotected penetration → ejaculation inside → harem orgy! My SEX level skyrocketed to cheat level in a short time, entering an unparalleled state! My stamina and erotic skills far surpass those of the most popular boys in school; I can attract girls without even trying! If I level up again…