I can't remember title and names of characters but... MC reborn or transmigrated in this body. Ok. Maybe. Maybe he wasn't. He is rich guy now. He's going on actors courses. He has task to act as homeless, so he went to train station (I'm not sure about place but it was suggested by ML). ML is also actor. And he is choosing male for role of robot for film abroad. MC wants to act*, so he began to live in clear schedule. All in all, he has small OCD. And his individuality became very calm although he is very enthusiastic... *And at the audition MC pulled up his jacket, exclaiming that he was very fit for this role... As I remember it's Chinese novel but... I'm not sure. I will be very greatful to you for helping!
Is it this one? How To Say I Love You BL, ML can read minds. There's scene where MC act as tramp too.