Seirei Tsukai no Blade Dance - Volume 3, Chapter 5 - Sylphid Knights

Tang Yu transmigrates into a modern urban novel as a wealthy second-generation villain. Each time he survives a segment of the plot, he earns a reward!He decides to lay low and survive until the very end! He starts by calling off an engagement to avoid getting killed by the Dragon King!However, everyone around him seems to be plotting against him, insisting on pulling him into conflict.Su Muyue: “You want to break off the engagement? No, you don't.”Father-in-law: “Who does Ye Chen think he is? My son-in-law can only be Tang Yu.”Bodyguard Captain: “Young Master Tang has been incredibly kind to me, I will kill the Dragon King for him.”No matter how much Tang Yu tries to stay out of the plot, someone always shows up to drag him back into the fray.To ensure his safety, Tang Yu has no choice but to defeat the Dragon King.

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

Kamishiro Homura is a hero who once by himself exterminated the another world invader that destroyed the military all over the world. However his extreme strength made the influential people ostracized and exiled him from the society with false accusation of [Traitor] attached to him. A few years after that, for an unspecified reason Homura entered the magician academy and he looked after the girls that were ridiculed as the [burden platoon]…!? This is the raise of the curtain of a fantasy tale of the unrivaled and invincible young man where not a single ally or enemy can keep up with him, the young man who sooner or later will be extolled as the messiah by the whole human race!

Kira was living the life that others could only dream about. He was gorgeous, rich and very popular - the kind of guy that drew students from all over the place just so they could brag to others that they went to the same school as him. He was undoubtedly the number one heartthrob that every girl dreamed about.