Devilknight Stories

Arthur stretched and yawned loudly as he untied his hair and flopped into bed, watching Shinra climb up to their bunk above his. He was hoping to get at least an hour or two of sleep tonight, especially after such a hard fight; no one was expecting that Infernal to be as tough as it was. Arthur sighed with content, yet as he slowly closed his eyes, hoping for the drowsiness to take over, they shot open once again; something felt... off Cover page background retrieved from - https://unsplash.com/wallpapers/cool/aesthetic

after the incident with the scroll of sealing Naruto is told of his mother and father and given his inheritance as he has 3 months to train as hard as he can to become the strongest

This the story of Zero Walker. The childhood friend of Issei but also his rival in regards to becoming the Harem King.