*ahem* okay, first and most obvious, they look the same. But of course, that's not proof. In the end of eltaryne, Kris rips out his/her soul. Chara was able to be awakened at the end of undertale genocide because of that soul. Deltarune happened before undertale, and there were only two humans that were treated like friends. Chara and frisk. Also if you look it up it mentions that deltarune is chara's story
yes but chara didnt start out soulless. and it wasnt that specific soul at the end that awakened chara it was FRISKS SOUL. (or the players whatever) and besides, chara would've had to age, the war and deltarune were pretty far apart, and thats if you assume deltarune isnt an alternate reality (which it is).
The human soul is able to persist after death, as said
Chara died, and then her/his soul was awakened by frisk's soul
So chara didn't age, as they were already dead
Also, in the Cutscene in deltarune, when Kris rips out their soul, they also pull out a knife
Wh else would do that? Also Kris was associated with being asriel's sibling
ok i know im late to this but there is so much to disprove what bullshit you just said. TOBY FOX HIMSELF SAID "I will say basically, what you are seeing here [deltarune] is not undertale.
To rephrase that, deltarune's world is a different one. With different characters, that have lived different lives. A whole new story will happen." even if he didnt say that, Asriel is in college. in undertale hes just a kid. This cant be after Undertale because, 1. undyne has 2 eyes. 2. undyne doesnt know alphys and vice versa. 3. there is no mention of asgore being a former king, or a king right now in Deltarune (he owns a flower shop). deltarune. is. an. alternate. universe. end of story.