Bleach: Contracting the Souls of the Entire Uchiha Clan from the Start

Transmigrating to Soul Society, after graduation he catches the eye of a great noble family and becomes the son-in-law of the Shihouin family. Shihouin Yagumo's Zanpakuto awakens the ability to traverse worlds, contract with the deceased spirits, and obtain a portion of the contractors' abilities. The first stop is the Naruto world. On the night of the Uchiha massacre, the souls of the entire tragically slain Uchiha clan see the Death God appear before them. The Death God offers a choice: "Either submit to me, and I'll let you live a second life, or perish right here—choose for yourselves." The entire Uchiha clan makes the decision without hesitation. "We, the entire Uchiha clan, pledge undying loyalty to milord!" And this is just the beginning. One Piece, Jujutsu Kaisen, Demon Slayer, Nura: Rise of the Yokai Clan... countless worlds await Yagumo's arrival, countless heroes and mighty figures are collected by him after their deaths. By the time he comes back to his senses...