Two Warriors (Kaizo x Purple Rose)

This is the forth book from my previous books so I'll give a quick glance.
Fang had doubt for Kaizo's brother love that cause his inner demon 'Terror' take control of him and tried to kill Kaizo. Kaizo then meet a person called Black Wing or Akio that help him defeat 'Terror' kinda. During the realization of his past love for Fang he meet Purple Rose who works for Black Wing. After everything settle Black Wing goes back to Boboiboy's home but felt upset when Boboiboy call him Senior Akio. The he got an unexpected visit from Drago his enemy and had to face his minion in his mind. Purple Rose shows Boboiboy his lost memory about Akio. Turns out Akio is his brother. Boboiboy then help Akio realize that he didn't lose him. Purple Rose watch from afar. The next they Boboiboy and Akio hang out at Tok Aba's Kokotiam when suddenly a portal appear and suck Purple Rose in. Kaizo tried to help her but got suck into the portal before the portal vanish. Then they arrive at Purple Rose's birth planet and learns about Purple Rose's past and may also learn the cause of his parents death.