Comments of chapter undefined of The Ascension of Contracted Spirits

So it is very unclear due to translation, but this chapter seems to be saying he is a transmigrator, born into a wealthy family. They performed a pet summoning ritual, which went wrong and he aquired some 'girl' instead. She is probably not happy about the situation and has been tormenting him to death from within the contract space. He was saved by a seal placed upon him by an elder, and sent out for experience away from the clan. While she is trying to murder him, he also gained some abilities through the contract as well. To save his life, he thinks he probably needs to contract another pet, level it up and through the pet feedback get strong enough to survive the girl.

the first chapter is interesting enough for me to try out a few more

This chapter is confusing. I hope the next couple of chapters clear things up a bit.