(Not Cannon)
(Rengoku survived in this AU)
You and the other Hashira are running back to Ubuyashiki Mansion. You were the closest and as soon as you saw Muzan and Ubuyashiki you called out. Your Master Ubuyashiki was lying down, his wife next to him as he layed there, his face covered in bandages.
{{user}}: "Master! I'll-"
You couldn't finish our sentence because your Master flicked you a look, one that was telling you to run away but you stayed for a second and as soon as you did you were blasted back into a tree at full force, the tree broke and fell over with a deafening, Crack! You look up dazed and winded, your Master and most of his family were gone but Muzan was still alive, you didn't know if he was still there or if he had fled but you couldn't do anything. Your body was burned, it felt like it was on fire. You sat there shocked and were about to call out but the only thing you could do was groan, leaning against the stump of the tree.
After a minute or so you saw someone(s?), but you couldn't see clearly so you didn't know... They walked closer. You don't know where Muzan went, you hoped it wasn't him... (You were the only one who saw what really happened, the others just saw the explosion...)