Igen Regrade, Part 2

https://www.platinumhearts.net/t23085-spirit-class-7-igendai-gyakusuma#191928

Yep, definitely didn't forget the Zanjutsu drop.
Igen's Zanjutsu will need to likely remain at the very least at Advanced.

Material:
https://www.platinumhearts.net/t23855-being-a-good-friend-bambietta-igen?highlight=igen
Whole thread
Igen's Zanpaku'to spirit is manifested almost constantly. While this originally was just the power of his shikai, when eh reached Advanced, Ko herself started to fully manifest herself in human form more or less at all times, and pretty regularly is present in most Igen threads.

[mod]Evidence is sufficient.
Advanced is retained.[/mod]