
Quick answer — Keiichi Sano worked on Restaurant to Another World (Character Design), Strike the Blood FINAL (Character Design), Strike the Blood III (Character Design) and 4 more anime.
Keiichi Sano worked on Restaurant to Another World (Character Design), Strike the Blood FINAL (Character Design), Strike the Blood III (Character Design), Strike the Blood IV (Character Design), Strike the Blood (Character Design), Strike the Blood: Kieta Seisou-hen (Character Design), Absolute Duo (Character Design).