Responses
https://www.mangago.me/read-manga/nagano_hymns/ has a pretty similar premise at the start. notorious figures with red themes saved by their benefactors. Although in Nagano, it's the savior that has some sort of leverage over the life of the person he saved.
Does anyone know something similar to this https://www.mangago.me/read-manga/i_accidentally_saved_the_jianghu_s_enemy/ ?