Onee-chan No Kawari Ni Nuite Agemasu -kanojo No...

If you are looking for a deep, emotional story about romance, this may not be the best fit. However, if you are looking for a short visual novel that focuses on specific tropes—specifically the "girlfriend's younger sister" dynamic—it is viewed by its target audience as a standard, functional example of the genre. Onee-chan no Kawari ni Nuite Agemasu for PC - GameFAQs

Fans are often drawn to the idea of a heroine who is so devoted to the protagonist that she is willing to be a "second choice" or a stand-in just to be with him. Onee-chan no Kawari ni Nuite Agemasu -Kanojo no...