Dog System, Return Me the Thunder Fruit

Traveling to the Blue Star where spiritual energy is revived, there are strange things, monsters, and a sister who is not easy to deal with. Damn, I have to make money to support my family. Fortunately, there is a system, a big gift package of Thunder Fruit, but the strange knocking sound knocked out my Thunder Fruit... "After detecting that the host encountered an S-class Knocker, the Thunder Fruit was automatically replaced by the Super Awakened Door Fruit." So the confused Knocker was transported to the vacuum zone of outer space after entering the door. The Door Fruit is definitely seriously underestimated. Anyone with the Space System will open a door behind you and give you a backstab. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.