Dao of Emptiness: "Accept that all things are impermanent"
The Great Dao: 自分 usurps "Dao of Emptiness" at the end
ThroneUsurpation: At the end, transcends 相手 as the 主人公
Protagonist: He now just bypasses ALL of 相手's powers
Ultimately,: He proves himself as The New Protagonist
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自分's the great sword king, his 4 wings for flight & his other 4 his blade
Yet w/ true humility, he gains something greater from 相手, for he realizes: "Because even if the form frays, the essence does not. Thus, accept impermanence", attaining The Dao as he becomes the new Protagonist (主人公) (Note: in buddhist terms "主人公" means "one who's attained the dao")
[Thus is The New Protagonist Born]