Multiverse: I exist in countless worlds at the same time

In the World where everyone relies on the System, a mysterious grandpa in the ring, their family background, and their super strong wife. I, Shin, Only rely on myself. ... Alternate Synopsis: One day, Kojima Shin was pulled into a mysterious grey foggy space. There, not only he awakened the memories of his previous life but also realised that he had travelled through too many worlds at the same time. [DC] Shin: "Guys, I need something to kill General Zod." [OPM] Shin (who is bald): "..Then I will lend you my fist." [Demon Slayer] Shin: "I want Muzan to bask in sun." [7 deadly sins] Shin: "Understood. I will lend you Escanor's Rhitta." [Marvel] Shin: "Who needs a super soldier serum?" Everyone: "Me. Me. Me" ... Also known as, "I never cheat. To become strong, I can only rely on myself." .... Start might be rough, but upcoming chapters are guaranteed to entertain you.