Nah I distinctly remembered the “after 7 days they revive” too. The only thing I can think is that maybe he recycled og heinz to make heinz the 2nd rather then waited out the waiting period? Unsure, but I hope it comes up later if not an error
well, it's all 'him' so not sure if it occurred to him versus making a 'new' one to get a diff starting trait/better 'stats', but i think someone on rizz's comments section said that in the novel version that version became "Harley"/ the barbarian chara (altho that second one died b/c his limbs were torn up so idk if he would've become a frankenstein/dark monster eventually) tho time passes by faster in the other world than it does on earth/korea
don't think it matters too much anymore tho
"When one of his avatars dies they die for good, but their avatar slot can be used again to summon new avatar after cooldown period." is what a reddit comment says but other than asking the author directly i'm not sure (either they forgot or didn't wanna have a heinz one and heinz 2 bc all the H names would've gotten confusing anyways)