Isekai Tenishita node Cheat wo Ikashite Mahou Kenshi Yaru Koto ni Suru

Suzumiya Kaede has little to look forward to in life aside from online gaming, and even that's slipping away from him. After a three-day-long MMO bender, he passes out and finds himself waking up in an entirely foreign fantasy world full of monsters and magic. Starting out with access to unthinkably powerful skills, he resolves to make the most of the situation and pioneer a hitherto unheard of niche: a spellsword.

(Source: Comikey)