18IF

Haruto Tsukishiro wakes up in a dream world and sees a mysterious girl named Lily. Following this, he meets a man named Kanzaki and learns of the existence of witches, which from here on entangles him in all sorts of incidents. 18if is a part of a multi-media project that also includes a mobile game and a virtual reality game. — Description from AniList community (anilist.co).