thanks so much for the upload. I didn't think I'd ever be able to see this I spent 3hrs playing this game having no idea what I was supposed to do and constantly failing and then I couldn't even find the pictures of it online.
Edit: lol are you serious? thanks for that insight what a waste.

Base +9, Kcjpunk +7

@blood racer

there's 2 flash games for this one, the regular hentai one and a stupid little pingpong minigame. I think you spent 3 hours playing that one...

Base +8

Yeah there are two indeed! And once I actually beat Mizuki(which I think was totally random) and there is a bonus pic in reward, a pic of Mizuki topless in lingerie and thong, it's really nice. You may also use a media player compatible with swf files and fastforward straight to it.
Oh, and many of the pics above are actually animated and with voices in the game(Mizuki's calling the old guy "oyaji"(dad) so maybe incest tag should be added). Some nice guy had already uploaded the torrent for both on nyaatorrents, go google it now!

Base +8, Kcjpunk +7

[十兵衛] ミヅキdeピンポン (超重神グラヴィオン)
[Juubee] Mizuki de Ping-Pong (Choujuushin Gravion)

ID (DLsite): RJ102677, RE102677

Base +14