BL GAME REBIRTH: MY NEW LIFE AS THE HERO'S YOUNGER BROTHER

When an office lady is reincarnated into the world of a spicy BL game she played, she’s shocked to find out that she’s now part of the story…as the younger brother of the main character! What’s more, by the time “Akira” realizes what’s going on, his older brother has already gotten together with one of the game’s love interests! But what about the other boys? How will they cope with losing out on the beloved main character? And what’s in store for the main pair after the credits roll? Akira couldn’t have asked to be in a more delicious position! But the weird thing is…he doesn’t remember there being a younger brother when he played the game?! (Source: Seven Seas Entertainment) — Description from AniList community (anilist.co).