"You need to stay strong too. You're all grown up, after all. Find someone who seems like a good man, get to know him inside and out, then marry him... Actually, forget the inside-and-out part. You might discover something you don't like. But don't be too picky. Nobody in this world is truly perfect."
Tetsu no Sosuke let out a quiet breath and watched the sun sink toward the horizon. "If I really die, your sister will have a hard time raising the child alone. Help her as much as you can... I want the child to grow up healthy, without ever having to draw a sword against the things she fears. I want everyone in the Demon Slayer Corps to find happiness, without tragedy haunting them anymore."
"You won't die..."
Shinobu Kocho refused to budge.
Tetsu no Sosuke smiled. "I won't die. That's why all this starts with 'if.' But how should I put it... People who keep insisting they won't die usually do. Let's do the opposite and settle my affairs first. Maybe it'll actually work."
"Really?"
Shinobu Kocho studied his face, searching his eyes for the truth.
Tetsu no Sosuke said earnestly, "Really."
"Mm." Shinobu Kocho said, "If you die, I'll never forgive you."
"Scary." Tetsu no Sosuke sighed. "If you're this fierce, how will you ever find someone to marry you?"
"That's none of your business!"
Shinobu Kocho glared at him. "Anyway, you're not allowed to die. You have to live, my sister has to live, and everyone else has to live too. As for whether I get married, and who I marry... You're my brother-in-law, not my father. Why are you meddling so much?"
"An elder brother is like a father..."
"You're not my brother."
"Close enough."
"You can't just ignore details like that!!!"
"The