Great Red, the most powerful being in the entire universe. At least, that's what most think. The thing is that what most people don't know is that that's a complete load of bullshit. There is a being much, much stronger than Great Red who was sleeping for a long time. Such a being woke up, and he won't be going back to sleep anytime soon. Extremely OP Issei! Issei x Large Harem.