Accel World, Machine-Doll wa Kizutsukanai Recommendations
While their world settings are different, both Accel World and Machine-Doll wa Kizutsukanai (Unbreakable Machine-Doll) involves with technology that contain main mysteries.
Both series' main female protagonist are capable of fighting in their perspective worlds and also seems to have an affection towards their partner/friend. There is drama, comedy, and romance involved although the responses the main protagonist delivers to their female friend/companion greatly contrasts with each other.
Both series also takes place at a school life setting where students learn more than just general academics.
They are both harem animes with mechanical dolls in Machine- Doll and virtual avatars in Accel World. The opening themes and the atmospheres are really similiar.
-Both have a school settings, however in both the main characters learn more than basic academics
-Both have a mystery main villain
-Drama, comedy, and romance ensue between the main characters