Start with a Zanpakutō

It starts with a Zanpakutō, and it's not friendly! I wanted to join the Navy, but I didn't expect it to be a secret organization. Complete the mission, struggle between death, just for those pitiful talent points. Not everyone is the chosen one, but I must be the chosen one! Eight hundred years later, times have changed, Five Old Stars! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.