 If you liked
Galge no Sekai yo, Youkoso!
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 ...then you might like
Real no Heroine wa Irimasen!
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these two manga very smiliar on the main character that hate of realty life
in real no heroine, the main char very obses to the Eroge and for some random reason he save a girl from rape incident. after that the girl fell in love and try her best to act juat like the real heroine in galge
but in galge no sekai, the main char got involve with galge in his everyday live. not really simillar but near simillar tough