Forgotten Juliet - Chapter 26:

Amakawa Haruto died before he’d the chance to reunite with his childhood friend who disappeared five years ago. Rio, a young boy living in the slums seeks revenge for his mother who was murdered in cold blood in front of him when he was only five years of age.

There exists the earth many knows of and there exists an alternate world. Two people, each with their own backgrounds and values. For odd reasons, the memories and personality of Haruto, one who should have died resurrects in Rio’s body. As the two are confused over their memories and personality fusing together, Rio (Haruto) decides to live in this new world.

Along with Haruto’s memories, Rio awakens an unknown but special power. If he’s to use it, it looks as if he can live a better life, but before that, Rio encountered a kidnapping which results in involving the two princesses of the Bertam Kingdom.

After saving the princesses, Rio is given a scholarship to attend the Royal Academy, a school for the rich and powerful. His background being a poor orphan who once lived in the slums, the school full of nobles was rather a detestable place to stay at.

She, a genius abandoned by her clan. He, a proud, pampered, two-faced imperial crown prince, a developing supreme ruler of the world. She, tricking him, disguised as a pig to eat a tiger, suppressing him, provoking him. Every time, after playing with him and stirring him up, she’d escape.

No man could put up with this! He could only hunt her, pamper and indulge her, lure her into falling in love with him, who would have thought, the one to first fall in love would turn out to be him———-

A young man who stood above the world, a young lady who dominated the landscape, evenly matched opponents, evenly matched romantic game of chase and tag.

- Description from novelupdates

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

Damien Castro, the God of Lust in the Thousand Starry Domain, was known for his unparalleled mastery of pleasure.His deeds you asked?The Immortal Lotus of the Heavenly Peak Sect, known for her beauty and swordsmanship, fell for his charm.The Frozen Lotus of the Silver Moon Clan, who's cold as ice, was turned into a soft woman.The Empress of the Phoenix Clan submitted to him both in body and spirit.The leader of the Heavenly Shadow Sect, once untouchable to all men, was claimed in just one day.Lastly, the Princess of the Spirit Blossom Sect had her heart stolen while he was just casually traveling.After failing to ascend the Heaven Breaker Tribulation, he died. But when all hope seemed lost, he suddenly awoke in the body of a young man who looked exactly like him, though malnourished.In his return, however, he found himself with a 10 times boost in everything he does. Read as how Damien challenges the heavens once again.