ririmu says that aizen is going to be defeated 100% all that power is getting on his head but defeating him make her sad, not that she likes aizen or anything like that, nope, but the more strong aizen gets the more it feels like its going to end, so it gets ririmu to be sentimental, like, he's supposed to be defeated, otherwise if not taken care of then the entire bleach world would be destroyed, gin-san has a chance of surviving but aizen will be defeated, he has to be defeated, yeah, she told us that the stronger the enemy gets, the closer their end is, it's a sign

ririmu is much more of a brat than aizen though