Read manga Will You Love me Again , Tsumibito Tenkousei, もう一度、愛してくれる?
Good news: I’m so happy! My beloved uncle has reincarnated and come to save me! Bad news: Even though he clearly loves me and treats me with such care, for some reason, he keeps doing things that hurt me… Why!? To make matters worse, he blindly believes everything that woman—who used dirty tricks to get close to him—says, and won’t believe a word I say. Uncle, are you really planning to marry her? …Fine. In that case, I’ll make you realize who it is you truly love!
Lyra-Kaja
Adopted son of her fathers friend*
Lyra-Kaja
They should really fix the family-translation things. Uncle, really? He is the adopted son of her father and calls her father his uncle, because he stayed with tehm for 8 years or so.
In conclusion: NO FAMILY RELATION AT ALL!