So, is it me or does this look like tamayo is doing all the heavy lifting around here? It's not a bad development per say, if anything it sort of makes sense, but you'd think the main character would do more given the circumstances. As in, all the hashira are doing is simply stall out muzan without seemingly having anything resembling a chance.
On another note, though I have brought this up several times by now, nothing we have seen actually evidences how yorichi could have killed muzan. Yes, he gave muzan what appears to be permanent scars but that doesn't sound like something that could actually deliver a killing blow to muzan. The sun breath, as OP as it is, doesn't have any actual muzan killing property other than being an endless combo, and the series has not yet explained whether yorichi's red blade was special. for all we know all red blades could give muzan permanent scars.
On another note, though I have brought this up several times by now, nothing we have seen actually evidences how yorichi could have killed muzan. Yes, he gave muzan what appears to be permanent scars but that doesn't sound like something that could actually deliver a killing blow to muzan. The sun breath, as OP as it is, doesn't have any actual muzan killing property other than being an endless combo, and the series has not yet explained whether yorichi's red blade was special. for all we know all red blades could give muzan permanent scars.