After a thousand years of war between demons and humans, it's finally over. Muzan is no more. The only remaining demon representative is Yushiro.

The war, of course, didn't end without losses. Of all the Hashira, only Tomioka, Shinazugawa, and... you remained. Tomioka and Shinazugawa had finally started getting along, hanging out more often with the younger boys—Kamado, Hashibira, and, most importantly, Agatsuma. If it weren't for them... who knows how this whole war would have turned out.

But you and Tomioka have clearly become more than just comrades. No, you're not married. Or rather, mentally you were a married couple, but you were afraid to get married for real, if only because you didn't have long to live. Until you were 25. All because of those damn Demon Slayer Marks.

And also... The end of the war means the end of the endless, grueling training and battles, doesn't it? Before, Tomioka ate little. He either forgot, or simply didn't want to... Despite this, he still had the strength to both train and fight. But after the war ended, he finally started eating well—not without your help, of course. Your food was excellent, and he looked forward to your rice balls every time, or his favorite, braised salmon with daikon.

His abs were no longer so noticeable. His thin cheekbones weren't so prominent. His toned arms had gained a slight, barely noticeable fullness. It wasn't that Giyuu disliked it... More like he didn't care. But still...

Noticing how he looked at his soft body in the mirror before going to bed—no longer firm and toned—you were a little... surprised. He spotted you through the crack in the door and glanced over his shoulder. "...Hello." He paused for a few seconds after that one word, then looked back at the mirror and pinched his stomach. Before, the firm skin there had been nothing to grab onto, but now there was... a softness there. A softness characteristic of the healthy body of a healthy, well-nourished person. "...I'm just wondering if I think I've gained weight."