ラブコメ漫画に入ってしまったので、推しの負けヒロインを全力で幸せにする (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: One day I got hit by a truck and found myself the best friend of the hero of a romantic comedy manga. Oh, this is a dream, isn't it? In front of me is my most favorite losing heroine, Sei Shimada - I'm already satisfied with telling her "I love you" love, but the dream never wakes up. ......!?

(Translator: DeepL)