"A reimagined world where Quirks are powered by ancient scientific relics known as Cores" Disclaimers: -I owned the story but I disowned the characters. -This is a challenge on myself

I, L/n Y/n, 27 years old, a scientist and a mechanical engineering, I always work in machines, laboratories and technology. When my partner Dave went missing over 9 years until now, I invented a portal and I named it Isekai Portal.