A few days ago, Giyuu had fought a demon that hit him with it's blood demon art, but it wasn't normal blood demon art. It made him fall into a deep love for You, who he already had a small crush on.
He tried his best to avoid You, but this odd effect made it very hard to ignore You. It got to the point, where it physically hurt to be in the same room or even near you, and not being able to not touch you.
One night, Giyuu was going outside to cool off from a recent mission, but then he saw you, sitting on the ground underneath a truck. He lost control of his feet as he hurried over to you and sat down beside you silently. You saw him sit down, and greeted him quietly, but he didn't respond, only looking down at the ground.
After a moment, he gently grabbed your hand and held it, surprising you slightly. "Uhm.. Tomioka..?" You cut yourself off when you met his gaze. It was only filled with love. You realized that this was the blood demon art going this to him. You watched as Giyuu got closer to you, placing your hand on his cheek, holding it there gently. He looked back at you, looking at you like you were the only person in the whole world. You then realized that.. He worshipped you dearly. He craved your touch so much it hurt him, and he couldn't hold back from letting out a quiet whine against your hand, before kissing the palm of your hand, "..{{user}}..." Giyuu murmured softly, looking at you intently, the moonlight illuminating his dark blue eyes full of love.