Ancient Xi
MC have 200 points, he used 100, so still left 100 points(only from 'Buddha Leaf'). He could use 'Chaos pool' to summon something better than skeleton even on low tier. MC could use points at least for 5 chance to summon something better( even like Lightning Rat). And if you don`t wanna them just rent them. If author worried about 'Pet contract', he still have points from another items MC sold.
Not really happy with a skeleton as his first pet. I mean, he's got a gacha in the back, right? Plenty of points to blow on getting an actually useful pet to be his first, instead he takes the worst of the worst. He's probably gonna use it for the quest too. Skeletons aren't any less boring when they get slightly more useful, either. Really, how did this author turn a pokemon clone into necromancy?