Demon Slayer: The Rising Sun

The is an alternate hypothetical where tanjiro is a descendant of Yorichii

Yoriichi's Reincarnation in Tanjiro

In this story, Yoriichi's swordsman skills are reincarnated into Tanjiro since birth. He has the same birthmark as him, and the rising sun earrings. Since he had lots of stamina ever since a small child, he started doing the Hinokami Kagura dance in place of his father, so he already knows how to perform all 12 forms...

The Storm Pirates

Instead of Gomu Gomu fruit, Luffy eats the Storm fruit (Arashi Arashi no Mi). With the power of Storms in his hands, Luffy will turn the World upside down. Rated M for sexual content, violence and cursing. Different-DF-Luffy. Harem.