You know, I feel like it's not often that a visual novel makes me genuinely nervous, but I really was during the first couple of loops with the way Yasha is hounding MC and at least remembers some degree of what happened. I could really feel the pressure after trying to enact the soup plan the first time and technically failing. I feel like the balance of some of the paths can be a bit finicky, since I got bounced between endings 4 and 2 for a little while, but I managed to figure it out.
SPOILERS
You know, when Sage first brought up the tethering, I was kind of worried that it might lead to some sort of role reversal where he becomes the crazy one using the string, but honestly Sage seems too level-headed for that since he's accustomed to both immortality and time loops.
As an aside, I'd feel more sorry for Yasha if he weren't so chill with killing MC for not being exactly what he wants sometimes, but that is also something that made me more wary of him and interested to see all of the endings. I did find his reaction in Ending 12 to be funny, though, since it's one of the few ones where one of the guys is like "Shit... Guess I have to start again." I kind of think On the Run can have sort of a sub-ending, if you managed to get Yasha to drink the soup, since I'm not sure if there's real need to run once he's forgotten. Then again, we're not really in a position to check, but I think we might figure it out when Yasha doesn't follow so desperately. It's kind of interesting that the ending where he can be renamed follows through on the next loop.