After Rebirth, He Went Crazy in Hanyu.

In a twist of fate, a brutal street thug known for his brutal strength and keen instincts met his end at the hands of the boss he served like a slave. Just when he thought he was going to die, he saw a screen flash before his eyes - it was a system and a status window! System integration: Become a top idol Suddenly he finds himself transported into the body of an idol trainee, a timid intern who hopes to shine in the cruel world of idols through "Rising Star," a popular idol survival show. In a world unfamiliar to him, where singing, dancing and glamor reign supreme, he must navigate the treacherous waters of the idol survival show or risk losing his beloved sister's life. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.