Bleach: So I'm a Quincy

(No System, not a single heroine, and the protagonist is not an arrogant, invincible type.) Somehow, he ends up in the world of Bleach. Huh? Why does he start out as a spirit? After entering Soul Society and painstakingly training until he reaches Shikai, Amamiya Miyako looks at the bow in his hand and the arrows formed from condensed spirit particles, lost in thought. Why does this Zanpakuto seem more and more wrong the longer he looks at it? … “Haschwalth, I have already seen it: that future...” “Quincy, Shinigami, Fullbringer, Hollow. My son, Amamiya Miyako... You will be resurrected as a human, the Holy Son, and then, for me, you will slay the Soul King!”