I searched a bit on the rape victim tag but I didn't really see anything. I'm not sure if there is anything similar to bitter virgin though.

I know this maybe be late so you may not see this but the one's I know :

Sodom no hana ni kiraboshi
Mars
Deep Love - Ayu no Monogatari
Eden no hana
Kokoro connect
Freezing
Berserk
Oyasumi punpun
Kiss & Never Cry
Watashitachi no Shiawase na Jikan
Asa mo, Hiru mo, Yoru mo
Vampire knight ? ( Not totally sure about this one tbh )
Sekine-Kun No Koi
Boku no Namae wa "Shounen A" ( More like victims of a tragic event but it may be something you like regardless )
Bradherley no Basha
Btooom!
Chisa x Pon
From end
Sensei no Shiroi Uso
Tobenai Tori ?
Zankoku na Kami ga Shihaisuru ( A yoai tho )

This is all I can think of for now but hopefully this helps .....

There are some victims of rape in Basara but it’s not the main character or even the main focus. The whole thing has elements of tragedy and suffering so there are a lot of different victims.

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My Personal Favorites: Skip Beat, Tokyo Crazy Paradise, Ashita No Ousama, Gokusen, Until Death Do Us Part, Perfect Girl Evolution, Ouran Highschool Host Club, Kisu yori mo Hayaku.

*falls back with nosebleed, killed by the sexy*