30歳まで童貞でいたら魔法少女になりました 1

[DeepL Translation - needs review] Volume 1 Introduction: If you stay a virgin until you're 30, you'll become a wizard. I used to hear that kind of thing said on the Internet~......, but I never thought it would happen to me! Huh?　Not even a wizard?　Huh?　A magical girl?　Why not? This is a comic book about the daily life of magical girls who are former virgins!

(Translator: DeepL)