LIGHTNOVELONLINE BTTH: From Genius to Invincible
Chapter 0.5 (Minor Spoilers)
NOTE: These are some hints about the current arc and the following two arcs, provided by the author himself at the beginning of the story. It can be said that it is the author's intention for you to know the following information. However, it is entirely optional, and those who wish to read the story without any kind of spoilers can always skip this chapter.
If you've never read/watched Battle Through the Heavens, I recommend skipping this and jumping straight to the first chapter, as this will only confuse you.
Spoiler
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