You dont need to understand, you just need to feel （/TДT)/
If you have watched Code Geass you would understand that this dj is based off of before the very end
Lelouch asks Suzaku to kill him after he became the king/emperor/ whatever to bring peace to the world. Leluoch previously took over the world and had acted as an antiero by making everyone hate him in order to stop all hate in the world or something like that.
Gosh. Why he took it by all himself? HUHU I remember a part of the episode. Gash. For THE sake of the world.
I don't understand start to finish of this manga. I'm confused somehow this particular manga always confuse me. I'm lost..