Review Detail of dragon544 in Testament of Highschool DxDead

I've never liked crossovers because the never make sense and are confusing to read. if this wasn't a crossover it would have been good but you decided to Mish mash a ton of anime together and expect it to go good. I like simple and overpowered mc novels with 1 mc and 1 anime not a ton of different anime in 1.