https://www.mangago.me/read-manga/mangjong_yaoi/
If you haven’t read it yet! Mc helps some random (ml) recover from amnesia.
https://www.mangago.me/home/mangalist/3559837/ https://www.mangago.me/home/mangalist/3588768/ They might not all have the exact same trope, but the seme always falls first because of the uke's kindness, cuteness, beauty, or simply because they are childhood friends
https://oceanofpdf.com/?s=Mistakenly%20saving%20the%20villa
Its a novel btw!

Any bls that have the premise of the mc helping the ml/doing something good for ml, and ml turning super loyal bc of it? (It can also be vice versa)