Itai no wa Iya nanode Bōgyo-Ryoku ni Kyokufuri Shitai to Omoimasu - Chapter 396

In the rebirth, in order to prevent the tragedy of the previous life from happening, Bai Yu decided to rush to the [Tower of God] at any cost, and face everything together with his sister!

However, Bai Yu, who was bound by the system, mutated his bloodline, and transformed into a black-scaled python seems to be developing on a completely different path from his previous life…

- Description from novelbuddy

Raymond, a lowly illegitimate son.He was born as the son of a noble, but he was nothing but a filthy man in the eyes of many.Even his qualities as a natural healer are the worst of the worse: Grade F.It was an irredeemable talent that was worse than the lowest class, indeed.But one day, a miracle happened to him.[You awakened as a player!] [Occupation: Surgeon] It was the beginning of a great legend.

Based on the popular Vocaloid series, by HoneyWorks, called “Kokuhoku Yokou Renshuu (Confession Rehearsal)“:

Natsuki, a third-year at Sakuragaoka High School, who holds unrequited feelings for her childhood friend, Yuu, who’s in the Film Club. However, instead of being honest about her feelings, she makes him be her confession “rehearsal” partner. Unable to say her true feelings, things start to get complicated when Miou and Akari, who are also in the Art Club, get involved! Will she ever be able to confess for real!?

Seratus tahun yang lalu, Ordo Cahaya mengalahkan Raja Kegelapan dan mendirikan pemerintahan yang mereka sebut era perdamaian.Namun, di balik senyum para penguasa Cahaya, tersimpan sistem yang menindas. Orang-orang yang dianggap “kotor” atau “berbeda” dimusnahkan atas nama kemurnian. Siapa pun yang mempertanyakan Ordo dituduh sebagai pemuja kegelapan dan dihukum mati.Namun, ada rumor yang mengatakan bahwa sisa-sisa kekuatan kegelapan perlahan-lahan bangkit. Seorang pemuda misterius bernama Kaelen, yang memiliki darah gelap, mulai mengumpulkan pengikut untuk menumbangkan tirani Cahaya. Mereka tidak bertarung untuk menghancurkan dunia, tetapi untuk mengembalikan keseimbangan dan mengungkap kebohongan Cahaya.