I Died Saving a Kitten and Woke Up in Another World Where the Kitten Is Now an OP Yandere Catgirl?!

Saving the kitten was easy. Surviving the kitten is the real trial. John died trying to save a kitten. With his dying breath, he wished that at least the cat could survive... and his wish was granted in the most unexpected way. John wakes up in a fantasy world, but he is no stranger to isekai twists. As a LitRPG aficionado, he is confident he can exploit this world's system and live out the grandest isekai adventure known to fiction! The only problem is the kitten. Reborn as an overpowered and particularly overprotective catgirl, Tabby stalks John wherever he goes, scaring off would-be party members, quest givers, and anyone else who gets too close. John knows exactly how his isekai adventure is supposed to unfold. Whether Tabby allows it to happen is the real question.