>resume playing DERQ Z
>roaming everywhere to try to upgrade my weapon because nothing fucking works
>finally discover it's not a normal Patch that everyone else advised but specifically a Patch that boosts ATK or DEF that can be shoved in the weapon
>ALRIGHT FINALLY
>upgraded my weapon
>went to farm some Death Ends
>Sayaka got impaled, her head eaten, her chest eaten etc.
>check weapon
>upgrade gone
>turns out I also lose the weapon upgrades when I die
Well fuck you too.