did the mermaid kill yellow guy or sumn

From what i know (many ppl talk about this manhwa so much in the tiktok)
For your question is a No. Well, atleast they're not kill the priest (golden hair Jio) for fun or hater but because starving, cmiiw

I say its the people that killed him, People tortured Giovanni, the one that ate him was isseur (because he was left starving and he thought gio was already a corpse SO NOT HIS FAULT PLS DONT BLAME HIM, HE'S ALREADY BLAMING HIMSELF)

Would you like a spoiler?

he ate giovanni in the past

Yeah it's... complicated... it's a yes but not on their own volition... just... get the tissues ready for the future...