Hello. This is a one shot manga that I read a really long time ago and can't find. I dont remember much but it was about a school girl and a father figure(?). There was this scene where the girl is trying to find her biological dad(?) Or something but couldn't and it ended up being that father figure that had been raising her all this time. The father figure hid the fact that he was the biological dad by dying his hair or wearing a wig. He also wore color contacts. I think he had like blue eyes or something. The school girl had inherited the color of his hair or eyes and thats why he hid them. He revealed to the MC that he was her dad at a play ground as she was sitting on the swings. I remember him to be pretty young. There was no mom in the story (I think). Sorry about the ambiguity. Thanks!