Becoming a God in Greek Mythology

After transmigrating to another world, Caesar becomes a cavalryman in the city of Lances. To his amazement, this world is remarkably similar to Greek mythology. I worship the gods as my faith, while they treat me like an insect! Following the path laid by supernatural beings, I open the door to elemental magic. I have more than just a System: I have goddesses too. Athena, the vanished Ophiuchus has appeared once more! Helen, you can never have another man but me! Zeus, did you know that there are true gods besides the King of the Gods? [System Broadcast: Welcome, Host, to the world of mythology. The True God System is now online... Choose the best targets, steal their knowledge and skills, and modify and evolve them to perfection. The System will alert the Host to important people and events along the path of destiny.] [System Notification: The longer the Host stays in contact with a target, the more skills can be stolen... Brief contact may grant one or more of the target's skills!] [System Notification: The Host has encountered Zeus in the form of a white bull. Devour him to obtain divinity and the laws of lightning!] [System Notification: The Host has arrived in Tartarus, opened the seal, and released the Titan gods!] [System Notification: The Host has run off with Helen, and war is about to break out!]