Yeah he’s gonna mess his career up . The fact that he looked like shit and arguably lost that exhibition to a beyond washed Gomi. Even wot the fact that gomi was bigger , tenshins boxing just looked trash. He looked like a journeyman MMA fighter trying his hand at boxing.
Japanese boxers get moved up fast. I imagine they find him a dozen or so winnable fights on his way to a Tokyo Dome fight with Inoue. But he won't last 2 rounds with Inoue (if he gets through the set-ups). To be fair, I don't know what else there is for him in kickboxing but I think he has way more potential in MMA especially if he stays in Japan.