The Invincible Summoner Who Crawled Up from Level 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 to build a stable life for himself and his sister, finding comfort in Megumi's presence and his favorite mobile game, La Vita Online. However, tensions begin to rise in their new living situation as Shinobu discovers that Ayumu may not be the benevolent guardian he appears to be. Just as Shinobu's world starts to unravel, he finds himself transported to a strange new realm—one that bears an uncanny resemblance to the game world of La Vita Online. Now faced with the challenge of navigating this mysterious fantasy world, Shinobu must learn to survive while uncovering the secrets behind his arrival and the connection between this realm and his previous life. With his sister's safety weighing heavily on his mind, Shinobu embarks on an epic journey to master this new world's rules and protect what matters most to him. (Source: J-Novel Club)