BLVNs with an especially beautiful or an interesting art style

UuultraC is my all time favorite visual novel, and I'm working on a convention program about BLVN visual arts analysis (of blvns officially released in english) with a friend, and those things got me interested in playing something new.

So, I'm looking for anything visually interesting! I unfortunately can't speak Japanese so I'd prefer if any recommendations either have an English release or a fan translation patch etc.

I've already played most Nitro+Chiral games (all but chiral mori and clean dishes), UuultraC, Hashihime of the old Book Town, Graduation (1999), Lkyt, and some Enzai.