but for Some Reason I Have a Strategy Book

“Takashi Takasugi is the lowest-ranked student in his class, plagued by bad luck. He clashes with the protagonist, leaves the academy, and is rumored to have dieda truly unfortunate character.” That's how the games strategy guide described him and now, the protagonist finds himself reincarnated as this bottom-tier nobody! Drowning in despair, he searches his classroom deskonly to discover the very strategy guide he bought in his previous life. “If I use this, I can become the strongest!?” Determined to escape his tragic fate, Takasugi sets off to secretly grind his skills in dungeons but hardship awaits at every turn. However, when he starts traveling alongside the games beautiful heroine, Hanagasaki, his destiny takes a dramatic turnaccelerating toward an unexpected reversal!

Source: MU