
Quick answer — Gackt voices Kiyoshi Date in SKET Dance, Seishirou Kirishiki in Shiki, Andrew Gallagher in Supernatural: The Anime Series.
Gackt voices Kiyoshi Date (SKET Dance), Seishirou Kirishiki (Shiki), Andrew Gallagher (Supernatural: The Anime Series).
Kiyoshi Date is voiced in Japanese by Gackt.