[Demon Slayer: Kimetsu No Yaiba] How Should I Survive in the World of Demon Slayer as a Thin-Blooded Person?

Cp Tomioka Yoshiyuki The heroine was originally living in dire straits, but was rescued by Infernal Anjuro in an accident. However, because he has no talent for swordsmanship but has superb medical skills, he eventually became a hermit under the recommendation and helps out at Butterfly House. The younger sister has low self-esteem and is cowardly by nature, but under the guidance of her elder brother, she gradually becomes bright and meets Shuizhu. My sister is as gentle as Tomioka and not good at words, so the process will be slower, but the ending is he! It's a single arrow, there's no bloody love triangle, everything else is about friendship and family, and no harem! The plot will follow the comic line, and sometimes it may be slightly adjusted for the sake of the plot. The comic characters will not be resurrected, so please don't join if you don't mind. I will try not to be a Mary Sue, try my best! ! ! I'm thin-skinned. If you think the writing is not good or feel uncomfortable, please quit automatically! Purpose: I really like the rich fish, how can I be disliked when the fish is so cute!