
He seemed more like the information-gathering comedic sidekick to me. There really was no story in the OVA. All it did was introduce the characters and they did it in a fairly annoying way.
I was surprised to hear Kana Hanazawa voicing one of the characters.

EDIT:
Now that I think about it, Tokimeki Memorial 4 looks like a reboot of the original game. Tokimeki Memorial 4 looks like 1 as updated for a new generation of gamers. They kept a couple of uniforms from the original game as nostalgic tribute. I assume the main girl is like Shiori in that she is going to be the most difficult character to end a game story with.