"Let's put some souls to rest."
Name: Jiyū Honpōna ("free spirited")
Squad 10, 3rd seat. I chose this squad because it seems the most chill, has my favorite color, doesn't have too many requirements, has Rangiku, and represents Mystery (also egoism, but ignore that). It also doesn't have a 3rd seat.
Zanpakutō call: "Play your happy song, Muryō no Tori!"
Zanpakutō Shikai: Muryō no Tori (Free Bird) - Play the hilt (also a flute) to release it. It moves anywhere you want with wind.
Zanpakutō Bankai: Muryō no Toriyoke (Free Bird Guard) - Becomes 7 sparrow wing saw blades that shields and cuts with wind.