Demon Slayer: Becoming the Modern Thunder Hashira

As the current Thunder Hashira, I, An, Zenitsu Agatsuma's senior disciple, became a Hashira long ago.

The Hand Demon? I'll kill it!

The Flower Hashira is in danger? I'll save her!

[This story won't break up any canon couples. It's mainly about making up for some regrets. Like Yoriichi, he has a natural Demon Slayer Mark and the Transparent World. The red blade unlocks later. Since I like the character Makomo, I'll make a few small changes to the timeline.]