Ok. Actually he did not know Sokatsui. I have the incantation saved for a mission. I just gotta request one. 

So I'm spending 2 points for Rikujōkõrō, and 1.5(?) for Sokatsui. 

I'm not sure if it's 60 points for each character or a communal fund for all characters I have?
As to Kaien, I'm spending points to upgrade his Zanjutsu to Ryōdan. I will hunt down and update their CSs.