
Quick answer — Tomohiro Ooshima worked on Encouragement of Climb Season 2 (Music), Haganai NEXT (Music), Haganai (Music) and 4 more anime.
Tomohiro Ooshima worked on Encouragement of Climb Season 2 (Music), Haganai NEXT (Music), Haganai (Music), Uchitama?! Have you seen my Tama? (Music), Yama no Susume: Kabette Kowakunai no? (Theme Song Composition), Peter Grill and the Philosopher's Time (Theme Song Arrangement), Hand Shakers (Theme Song Composition).