Slave from the Start: I Turn the Tables with a Bloodline System

[System-driven good-for-nothing progression, readers looking for something different, come take a look! Join Bruce in fighting for the human race! P.S. Don't read if this isn't for you.] [One female lead + a protagonist who thinks things through + upright values] [Bloodlines: Divine Blood, Nether Blood, Holy Blood, Spirit Blood, Demon Blood, Mutant Blood] [Bloodline power release: pupils change color in the first stage...] [Worlds: Human Realm, God Realm, Spirit Realm, Netherworld...] [Combat ranks: SSS, SS, S, A, B...] [Classes: Warrior, Elementalist, Spellcaster, Ranger...] [Bruce transmigrates into the body of a slave. Watch how he uses his Bloodline System and a trash bloodline to make a comeback and become a god!]