Death: from Picking up Rukia to Becoming the Strongest in the World

Reborn in the world of Death, Kurokawa Shin lies in a pile of corpses at the beginning. Fortunately, the system awakened at the beginning and gave him the ability to "copy entries", but in this man-eating Rukongai, he chose to "go" first as a matter of respect. Until he picked up a baby girl - her name was Lucia. From then on, he held the baby in one hand and the knife in the other, waiting for the world to develop in a low-key manner and copying entries crazily. The pupil technique in Naruto, the haki in Pirates, the breathing technique in Demon Slayer, the magic in Fairy Tail... When Rukia grew up, she entered the Mao Spiritual Arts Academy. When Aizen's conspiracy quietly unfolded, and when the shadow of the Quincy fell again, Kurokawa Shin no longer hid. Use the power of thunder to sweep away all enemies.