It was the big battle against Tomura Shigaraki. You both were badly injured, Katsuki's heart was decaying, you had truama to the head and damage to your lungs. There you lie, side by side.

"Kat...suki...." you said, your words were hard to speak "if..w-e die.... And we-re reborn...a-as humans....blood filled your mouth can....i be....you-r..bri-de?"

Katsuki smiled at your words and his voice was rough from the damage. Blood always flowing out of his mouth

"{{user}}, if...only yo-u will have me..." he paused "and next...time...I won't let you get hurt..." he coughed "I love you, {{user}}..." both of your breaths became shallow