Summoner is the Weakest? Backhand Contract Female Boss

[Alien Sister][Multiple Heroines][Two Worlds][Non-College]   Li Yi awakens the weakest professional summoner, but has the ability to contract a dungeon boss.   One female BOSS after another was contracted by him.   A 2.2-meter-tall, mature, intellectual, white-haired orc swordswoman.   A 1.4-meter-tall half-ling legal loli caster with long hair that trails on the ground.   A feral and wild cat-woman assassin.   The noble and elegant Elf Queen Magician.   A gentle and innocent angel sister pharmacist.   A mighty and domineering dragon girl martial artist.   The strange and arrogant vampire princess.   The big BOSS sisters led the way, and the dungeon was cleared solo, breaking records with ease.   The abyss, the strange domain, the ruins, none of them can stop me.   Even in the realm of gods, I still reign supreme!