Void of Crimson Red

Hyde Kido, an ordinary school kid who became an In-birth during a fateful 'Night'. He was granted a power far beyond that of a natural human and wields the greatest weapon within his world, the Night Blades sacred treasure, the Insulator. Ever since that day he's wanted to go back to his boring life but he won't stop fighting until he has helped Linne and stopped her infinite cycle of Rebirth without killing her. But after a long battle against Paradox Hilda, the leader of Amnesia led to the core of the 'Night' to shake and open a vortex taking some of his friends and enemies to a world full of Devils, Angels and Fallen Angels. What lies ahead of him? What challenges will he face? Will he ever return home? And what will happen between and the Red Dragon.

(I don't own Under Night In-Birth nor DxD. Also some of you may not know this but Hyde actually can kill Issei and Vali with his sword the Insulator and he's also got more skills than Issei when it comes to using his power and sword skills which I was surprised about so for those who think the Heavinly Dragons are powerful, Hyde can defeat them with his power but it can kill him since it's capable of properly killing Re-Births which are technically immortals that reincarnate every time they die. And maybe I might consider him getting a sacred gear of his own later on or during the start or later on)