Identify Japanese VN where you corrupt the school... (Solved)

[dusty stu]

You join the student council and eventual f*ck all the other girls on the council.
You corrupt the school with lewd versions of normal school events, such as a lewd Halloween or a lewd Sakura/fertility festival.
The MC is a male and the girls are in highchool.
I think the game has pregnancy? not sure.
Lots of public sex and exhibitionism.
I think there's a scene where you take a girl on a walk in doggy cosplay.
I think you f*ck one of the girls from behind while she is giving a speech to the school?

What's the name of this game its on the tip of my tongue...

Edit: Welcome to Se-rua Academy Creampie Festival

 

[Retro]

Was it actually a Japanese made game or just used a Japanese school setting?

 

[dusty stu]

Was it actually a Japanese made game or just used a Japanese school setting?

both i think

 

[Armelle69]

sad noone has the answer, it seemed pretty interesting ^^

 

[dinurs]

Welcome to Se-rua Academy Creampie Festival?