System: I Can Do Everything Except Being a System

Lin Tianyu travels through the fantasy world and obtains the devouring system. As long as he kills creatures, he can devoure souls. It is Lin Tianyu's choice whether to increase his strength or acquire the skills of this creature. But at what cost? "System, release the task quickly." Serve a ball, you won't find anything to do, right? "Huh?" You need me to calculate numbers in a fight, and find information for strategy, but you are just a lazy dog and you want me to be your father and mother? What I thought was beautiful. "... Tsk." You kid still dislikes it, right? You should be grateful to me for having such a super system. Okay, do you think—— "System, cancel the contract." Dad, I was wrong. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.