Games like Tenchi Muyo! Ryo-Ohki

If you finished Tenchi Muyo! Ryo-Ohki, the closest matches are Yuuki Yuuna ha Yuusha de Aru S, High School DxD, Mahou Shoujo Pretty Sammy: Osorubeshi Shintai Sokutei! Kakubakuhatsu 5 Byou Mae!!, Maho Shojo Pretty Sammy: Heart no Kimochi and Ouran High School Host Club. All 10 share its visual novel genre and are ranked by how closely their themes and modes overlap.