Yamada-kun and the seven witches.
Suzaku High School student and problem kid Ryu Yamada is in a bad mood after being chewed out again by the teacher today. As if his day couldn’t get any worse, he falls down the top of the stairs with honor student, Urara Shiraishi! When he comes to, he’s switched bodies with her! Two people who couldn’t be more opposite from each other find themselves running around the school in each other’s bodies! All from a kiss! The problems don’t stop there in this school romantic comedy that starts with a kiss! The non-stop fun has only begun! Summary from anime planet.
The story begins with Yggdrasil, a popular online game which is quietly shut down one day. However, when the protagonist Momonga decides to log out as the server shuts down, he found himself trapped in the world of Yggdrasil as his in game character, a powerful skeletal wizard. The world continues to change, with non-player characters (NPCs) beginning to feel emotion and becoming life-like. Momonga becomes cold and calculating, while having his emotions suppressed, as if he was not an actual human. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game. Summary from My anime list.