What was this imouto VN again?

[Kirashi]

Maybe 3 or 4 years ago, someone started translating on a VN focusing on imoutos. I only remember that a lot of "imoutos" claimed to be engaged with the MC, while he didn't seem to know any of them. So all the heroine started to engage into a war litteraly). I thought it was called "Imouto sensou" or something like that but after a search it seems I was wrong. I remember there were quite a lot of heroine. It isn't translated. Someone has an idea what can this VN be?

[m0zsca]

i assume its this one? https://vndb.org/v11433

[Kirashi]

that's it, good job!

[Stormwolf]

lol, best heroine designs are the non main heroine ones.