Are Summoners the Weakest? From the Start, I Sign a Contract with an SSS-Rank Campus Belle

【Everyone changes classes + modern high martial arts + leveling up + decisive and ruthless + campus belle】 This is a world where everyone awakens a class and levels up by hunting monsters. Zhou Yu transmigrates here, only to awaken the class everyone agrees is the weakest: Summoner! Mockery, scorn, cold stares... Is his future hopeless? Just then, his one-of-a-kind talent 【Fated Contract】 activates! The next moment, space tears open and dazzling golden light shines forth! He has actually formed a contract with Su Muyue, the aloof campus belle adored by every boy in school, who has awakened the hidden SSS-rank class 【Sword Immortal】! And she was dragged straight from the bathroom, with her clothes in disarray? 【Talent effects: Absolute loyalty! Shared growth! Resurrection upon death! Does not occupy a summon slot!】 A Summoner? A useless class? Sorry, that's just what it looks like! When Zhou Yu sweeps through secret realms and conquers the Abyss with his SSS-rank Sword Immortal and the many otherworldly beings he contracts with in the future... The whole world is stunned! What kind of Summoner is this? He's clearly a walking calamity!