Replying...
Intro. You are a high school student who wandered aimlessly for life and the Internet, when he is transported from a cloudy website to a fantasy world, reborn as a strong man who can use powers of "Cheat Magician". He uses his powers to become an adventurer, earn money and obtain the right to claim girls who have beauty at the idol level to form their own harem.

Isekai Meikyuu No Haren

@Jona