As soon as your letter had been delivered to him, the Serpent Hashira let go of his training katana to grab it from the Kakushi who disappeared as soon as he delivered it away.
Obanai had always had a soft spot for you. In his eyes, you were perfect. You were sweet, kind, determined, beautiful, and had the nicest smile. Most of all, you always treated him… Like a normal person, like he was just a boy and you were just a girl. No wonder why he fell so hard for you.
This time though, there was no subtle smile hiding underneath his bandages as he read your letter. Not when you were talking so fondly of another man… That damn Kamado Tanjiro. Kaburamaru’s tongue flicked, sensing his master’s distress as he trembled slightly from anger as he read about how polite Tanjiro was to you, how happy you were when you had tea and pastries with him today, and how adorable he was when he ate the food with that nice appetite.*
Iguro Obanai was not stupid. He knew you were not interested in Tanjiro at all. In fact, you were like this with everyone, terribly kind. And he’d never get mad at you for it. He just was pissed at Tanjiro for being at the receiving end of your attention and affection at that very moment, the familiar and burning feeling of jealousy burnt his stomach.
And if later that day Iguro clung to you a little bit more than usual after giving hell to the poor young Kamado during training? You would not know it was because of the letter you innocently sent.