I Became Daddy Long Legs in a Romance Fantasy

It was all done in the hope that these children would be happy. “Uncle. You still haven’t forgotten the promise you made back then, right? I’ve finally become an adult.” “Master, I have long admired you not as a student but as a woman.” “I told you. I never thought of you as my dad.” … But I didn't want to be happy like this. What's so good about a guy like this? You guys, that won't last long.