Starting from Level 1: I’ll Defeat All Reincarnated Monsters in My Secret Dungeon

It couldn’t get any worse for Shinobu Iijima. After a terrible house fire consumes his life and puts his sister, Megumi, on her deathbed, Shinobu wakes up in his favorite MMO: La Vita Online. With all his data deleted and reset back to level 1, the only solace Shinobu has is that his scumbag of a foster father, Ayumu, died with him…only to discover he was reincarnated in the game as well?! A nightmare reborn, Ayumu pledges to get revenge on the siblings, biding his time until Megumi eventually dies and reincarnates in La Vita. While Megumi struggles through her last breaths in the real world, Shinobu does his best to grind his way back up the levels before her reincarnation. Armed with a hidden dungeon, his hard-earned legendary summons, and an undefeatable will, Shinobu must reach the max level in order to protect his sister from their foster father and the other reincarnators threatening to stop him at all costs. *Source: J-Novel Club, Vol. 1*

After losing his father in a tragic accident, Shinobu Iijima and his younger sister Megumi are taken in by their father’s old friend, Ayumu. Shinobu works hard in the hopes of starting a new life for himself. Megumi, and a mobile game called La Vita Online, are the only things keeping him afloat. One day, Ayumu reveals his true intentions of tearing Shinobu down and getting his hands on Megumi. But just after Shinobu learns that Ayumu deleted all of his game data in La Vita, their high-rise apartment catches on fire and Shinobu falls to his death, Megumi in tow. He wakes up in a strange new world… and realizes he’s been reincarnated into the world of La Vita Online. An announcement from the devs tells him that Ayumu is already there, and a countdown to Megumi’s arrival is ticking. Shinobu vows to protect Megumi after she arrives at any cost, even if it means he has to crawl his way up from level 1 to fend off all the other reincarnated players. *Source: J-Novel Club, Vol. 1*