Everyone: the Weakest F Level? I Contract with General Thunder

Su Mu traveled through the parallel world! This place was invaded by an alien insect plague, and many slaves of the Star Sea Demon God walked on the earth. They could contract summoners with familiars and become the protectors of mankind! The summoned beast becomes uglier! Fierce! Fear! The stronger the strength! "Thunder and Lightning General" was summoned, with a slender figure, beautiful appearance, and fair skin! Everyone thinks that Su Mu wasted his SSS-level talent and summoned the weakest F-level humanoid familiar, making him the stupidest and weakest summoner in the world! Contracted with the weakest summoned beast in history - nothing but beautiful! Soon. His career as a summoner is getting weird! [At this moment, the time of death! ——General Thunder] Butterfly fire starts a prairie fire! ——Wutao] Ice wave rages! ——Yora] Kamiliyu! Frost is gone! ——Kamizato Ayaka] [Fu Ningna, the Eightfold Divine Son, Xiao Gong, Naxida, Gan Yu, Ye Lan...] It is inevitable to be invincible in all the worlds. But why does Su Mu feel that the bones in his body are getting worse day by day?