DxD: Finality

Ryujin Hikari is an average 18 year old teenager, an avid player of Honkai Impact 3rd, Genshin Impact, and Honkai: Star Rail, as well as an anime lover. He is kind, helpful, and has a strong moral compass, but in the eyes of his very wealthy family, he is seen as nothing but a loser, a disappointment, and a failure. As a result, they neglected him, leaving Ryujin with an unhappy childhood that forced him to mature quickly. Despite their treatment, his family was 'kind' enough to provide him with a monthly allowance and a small rundown house.

Ryujin worked hard to develop his life skills, such as cooking, and he diligently studied for college. Tragically, he died saving a girl from being hit by Truck-kun. After his death, he met a God of Transcendence, who called himself the 'True Author.' The god revealed to Ryujin that "All fictions created by humanity are realities in other dimensions." Ryujin was then isekai'd and reincarnated into the DxDverse... with a Gacha Gaming System!