Slay the Gods: Who Needs Forbidden Ruins? I'll Pick My Powers from One Piece

[Slay the Gods + One Piece + System + Multiple heroines] After transmigrating into the world of Slay the Gods, Lu Fei discovers that he has become the proxy of the demigod Adam. Lu Fei: Come on, man. System: There’s a garden with two trees. Lu Fei: What garden? What trees? Adam’s only a demigod? Lu Fei: What’s the power scale in Slay the Gods, anyway? There are only a handful of gods, and even the Seraphim are getting beaten up. Can Adam actually fight? Lu Fei: He can’t. He just doesn’t have what it takes, you know? System: The Garden of Eden, complete with the Tree of Life and the Tree of Knowledge. Lu Fei: Next I’ll lose to the Ghost Face King, then the Nanda Serpent Demon, then the Ghost Face, and after that I’ll have no one left to lose to... System: The Tree of Knowledge is the mother tree of Devil Fruits. Lu Fei: I’ve got no shame left... Wait, what? Say that again. System: You now have the Devil Fruit mother tree, and Adam will raise your absorption limit for the fruits. Lu Fei: I’ve never had such a wonderful start from the start! Rubber gets dismissed as nothing more than a rubber band? Lu Fei: If I awaken the Sun God Nika, won’t you be blown away? No Haki, and an uncertain future? Lu Fei: No Observation or Armament Haki? I’ll make do with my Great Buddha golden body and foresight. The Dragon, the Great Wolf God, the Phoenix, the Eight-Headed Serpent, the Nine-Tailed Fox... Susanoo: He only glanced at me, but I can’t shake the feeling that countless eyes are watching me. My mental illness is getting worse and worse. Eight-Headed Serpent: I’m the real snake! He’s a knockoff. I refuse to accept this proxy! Lu Fei: Hand it over! The Eight-Headed Serpent was slain. From today on, the path I walk will be the source of myth. Speak my name, and even the gods will be startled.