https://www.dlsite.com/maniax/work/=/product_id/RJ239810.html
[Imperial Gatekeeper]
Velka already post the DL, although the part 2 is missing.
Since I can't let him know, perhaps he can see this post something
Re: [190401][H.H.WORKS.] 露出学園【スニークアクション露出プレイングゲーム】 [RJ248300]
I have managed to get v1.11, although there's a new update for the endings. It's on mega though, PM me if you want it