I’m looking for a manga about a young boy who is treated unfairly by his father, and wan...

I’m looking for a manga about a young boy who is treated unfairly by his father, and wants to become a soccer player. He has a little brother too who his father actually likes. A middle aged single lady meets him late at the park, and starts coaching him, and looking after him (kind of like a mother). But she feels like the realationship between them is weird, and she feels guilty. When the father finds out her company moves her away and she loses contact with the kid. Then there is a time skip, and the boy is regretting that the father found out, and he develops a crush on her. The a Lady keeps meeting dudes, cuz her mother is nagging her. Than the guy goes on a field trip and runs into the lady. (He’s a teenager here) I read it somewhere, and dropped it cuz the age difference was a little big for me, but I got interested again, and I can’t find it.