Help me find it

So, I don't exactly remember everything but the story goes like this. A young seventeen year old (or not ) boy isn't really loved by his mom so decides to run away from home and move to Tokyo and I forgot the middle part but is discovered by this idol discovering director-ish person who left his job I guess of making people famous cause of his rumours of sleeping with the idol who are guys and at first he just models and then he , theboy, stars in a drama I think and gets famous and he's also sleeping with the director guy. After he's famous his mom comes to get him but he doesn't wannastay so his step dad helps him go cause he felt sorry for all those years . And all of his senpai models who were made famous cause of the director dude alwayswarn the boy to stay away and stuff. If you know it , pleaseee tell me.