I don't understand the argument. Regardless, this was just an example of Jevil being metaphorically right.
You're saying that the statement of Jepil "I CAN DO ANYTHING" is a metaphorical and thus "THIS BODY CAN'T DIE" is the same, like, its gonna making any sense.
First, what you're giving as an argument there is not even canon-ish (I mean, where did you get that speculation from? Joker's Card is already proven to be the case fo I CAN DO ANYTHING)
Second, you're treating Jepil like he's a walking metaphorical being... like... what? So, his statement "NAP FOR HUNDRED YEARS" is a metaphor now? And what does it leads into, i mean, what's true purpose for that? And "THIS BODY CAN'T DIE" too, how is this a metaphorical? We clearly see he's really into this "Knight" thingy that he's able to forsee the events coming... bro can't die to miss that out, am i right?
- The party members are just "downed" and can get back up in a couple turns (including Susie as a boss);
- Most enemies run away, and some, like Clover, return later on;
- Lancer, C. Round, and Jigsaw Joe get knocked away and return later on (although Lancer does get hurt enough for Susie to stop the battle if his HP is depleted in the rematch, he's fine afterwards);
- The Sweet Cap'n Cakes, Spamton, Rouxls Kaard and Queen('s chair) are perfectly fine to heal or regroup;
- Pipis do actually turn to dust, but they may not be sentient, and are very much an exception;
- Spamton NEO explodes, but he then reappears relatively fine after the battle;
- GIGA Queen is damaged and runs out of battery power, but Queen quickly recharges and comes out fine.
- King, Berdly, and, yes, Jevil just get tired out.
[*] I'm aware this is just a game-mechanic, not a canonish idea if ask me... because its not make any sensei if its canon, DT User is the only one who can DE-TERMINATION themself, Monster's Souls couldn't.
[*] This is not a perfect example either, because there is no such a path ending like Undertale does... No Genocide or Pacifist, them running is not a canon thing like Jevil's Game about "0HP", take it as they've never met.
[*] Susise attacks Lancer to the point he's hard to stand is already a debunk for this, yeah, Monster's can heal too... did you really think they couldn't? Ralsei even had a spell for that healing, if you said they couldn't it would be surprising.
[*] This goes back to my second argument, and like you said, heal.
[*] "An invasive species of freshwater clam" Spamton said this, so yeah, no, they're still a being/monster with soul... but just doesn't have any consciousness, i think we have that too IRL, doesn't mean they're not a being? right?
[*] The one that got destroyed is the armor, the CD itself which got Spamton in it remain unharm. Like you're destroying a CD box with a CD attached, the only thing that got destroyed is the box, right?
[*] That is not the Queen itself.
[*] I don't think 0HP there have a meaning like in Jepil's case, King get 0HP there is not the type of "dead" thingy rather than like "in this point, you lose!" because like i said, there is no such path like Undertale does where he have the choices to kill and etc.
While in Jevil's case its different, we do have a choice, we can kill him or act him (although its still have the same ending, i guess we don't have a choice, but slightly i guess we have)... Jevil 0HP is an actual thing or canon, because that's the whole point he's challenging us, he should bes death when we depleted his HP to 0, rather he just said "THIS BODY CAN'T DIE" or "NAP FOR HUNDRED YEARS"
I really don't see why is this not a thing and just metaphorical, like i said earlier, there's no reason for Sean to "half" trusted him if his word is all metaphorical.
Yeah it doesn't make sense, but doesn't mean its not true.