I really wished the artist didn’t skip the beginning of the story I want to see how did ...

if you mean the heroes that wasn't really explained well either. iirc, as soon as he gets enough points or whatever, he can summon heroes and it's basically half a dating sim game where he needs to raise their loyalty to him (and in turn, their affection). it's not also mentioned how he did it except in passing, so i can see why the manhwa would skip it...