It's ok it's ok. Well normally if they go to 1hp its very bad...as in they might totally die if they get hit again(0hp). This event they can only go to 1hp and not any worse so they cant break. If I continued without healing though I would get a pretty bad rank at the end X''''D. I had a healing item to fully restore all party hp so I got an A rank thankfully.
...No if they go to 0hp I mean they DIE. 1hp then they just can't fight for the rest of the battle. I guess its not too bad if its a sword you can easily get again as a drop but.....if its one from an event for instance...it may be unattainable for a while until implemented into a new event/campaign etc.
It's not a fun feeling lol. At first I didn't know they could break when I started and I broke one of them out of stupidity.
Eh it's not too hard. As long as you don't continue when they're in red. If they're not in red they're safe and won't die even if they go in red on the next battle.