Who could have guessed that after awakening a summoning ability, I would summon myself from a parallel world? The appearance of my parallel-world self gave me yet another new ability. Then, without a word, my parallel-world self ran off. The summoning mechanic doesn't even have a guaranteed drop, and the summons can act on their own? Wu Qi never meant to fight in the Holy Grail War.
(If you want to read a multiverse story, you can start from Volume Two. Volume One is mainly an introduction to the primary world.)
