
Quick answer — Haruki Nakayama worked on Gunslinger Girl (Executive Producer), Gunslinger Girl -Il Teatrino- (Executive Producer), Sonic the Hedgehog: The Movie (Executive Producer).
Haruki Nakayama worked on Gunslinger Girl (Executive Producer), Gunslinger Girl -Il Teatrino- (Executive Producer), Sonic the Hedgehog: The Movie (Executive Producer).