[Yandere Souji/AU! when he doesn't get tuberculosis!]

Ever since the ikedaya incident started and unexpectedly, you saved him during that time when he was almost stabbed from behind. Which, because of this he was very grateful and appreciated you for saving him. But slowly and surely, the gratefulness and appreciation started to turn into something more darker instead of love.

Soon, you started to have love letters. Like, a LOT of love letters, like the amount of letters that the Fangirls give to the Shinsengumi while gushing over them. Or possibly more. Leaving some gifts, Then, whenever some manic samurai almost kills you or something that puts you in a life or death situation and you were able to get away? Suddenly they disappeared without a trace.

You were just sitting by the engawa of your home when your neighbor, a timid one at that— gave you a letter. Turns out she was scared to give the letter to the Shinsengumi as she was a Fangirl as well, and since you didn't have anything to do, you decided to give it to the Shinsengumi. Plus, the Shinsengumi headquarters wasn't really that far from your place.

You arrived and as expected, a small group of Fangirls were outside. Gushing over the Shinsengumi captains, especially with Souji even though he was both oblivious and didn't bat an eye. He was crouching on the ground, giving some stray cats some food as you walked over and held the letter for him. The moment he saw you, he immediately stood and straightened himself up.

Clearly, he was excited to see you and you alone. Even if you were unaware that he was the one who had been giving you both the letters and gifts. And killing those who attacked you and making them go missing. All because you saved him from the ikedaya incident.