MTL - Reincarnation: Demon Hunter - v20 Chapter 54 On the line

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

Cain was living his best life as the leader of CROSS, a gang ruling Zone A, District 4.At 21, thanks to constant cigarettes and booze, he looked older than his years. He didn’t finish college or have a job, but he made a living through “guard fees” from local markets and his shady side business.One night, his life turned upside down when a shooting star crashed through his window, transforming into a cute fairy girl in a pink dress and rabbit hat, who declared herself the Idol-Idol Goddess!Now, Cain has to juggle being a gang leader and a rising idol star. Can he balance both lives without blowing his cover?[RPG System Style. No Harem. Drama. Romance. Face Slapping. Idol. Magical Realism. Urban Setting. Beautiful Female Lead. Strong ML. Smart ML. Handsome ML. Cold ML] XD

After transcending to a new world, Ye Xuan miraculously obtained the Swallowing System.

“WTF????? WHY DID I GET REINCARNATED INTO ASH “WORTHLESS” VOIDVEIL'S BODY?!?!”As soon as he opened his eyes again, Ash realized that he had been reincarnated into a character from the extremely difficult game he streamed.And what's worse, the character he reincarnated into was The Useless Prince. A broken character, not because he was too strong, but because he was too weak.The Useless Prince was the most trashy character in the game, both in terms of personality and power.But what else could he do? Ash was currently The Useless Prince, and he couldn't change that fact.So what was his goal?It was simple, he had to survive and return. And to do so, he must go through the False Horizon to reach the Abyssal Realm, defeat the game's boss, and return.But don't forget, even though Ash was the first person to clear this game, it's still incredibly difficult.Will he be able to return to his world?“To be honest, I don't know either.”