Rise of the Demon Monarch

Irwan Valdiger, an average school students. Although he was leaving a normal life as a normal boy but his life wasn't that good. He was leading his life like a prisoner. He started to have weird dreams all of a sudden. And that dream was the changing point of his life. One day, while coming back from his tuition, he encountered something weird. Something entered his body. That thing appeared in his dream, granted him power and made him one of the 8 superhuman that exist in this world. What was it? No clue till the moment it came out of Irwans body, while he was unconscious. That thing made other tremble in fear, that thing spoke to them, introduced itself as a DEMON THAT RESIDES INSIDE IRWAN'S BODY... That thing gave them a hint of Irwan being transferred to another world and gave other 7 superhumans a choice between choosing Irwan or choosing this world. And when the time came, it transferred Irwan to another world, where he lives his life being a level 1 and becomes a demon Monarch...