Ok so I was messing around as blu/sam (lv80) killing lesser colibri's with my friend. Since so many people were asking me about it, I decided to test out sekkanoki with chain affinity. Let's say I was pleasantly surprised. <.<
Ok so I did sekkanoki chain affinity, casted disseverment with 200ish tp. What I noticed after... well sekkanoki did indeed reduce the TP cost of my CA spell to 100 tp, but... the effect of sekkanoki was STILL UP.
So thinkin maybe I saw it wrong, I tried again with 300 tp. Here's how it went. Chain affinity, sekkanoki >>> Disseverment (200tp remained, sekkanoki was still on) did savage blade, and sure enough, 100 tp leftover.
Idk about any practical use for this seeings as it takes 300 tp to really take advantage of (other than gettin ws points solo) but I still thought it was really cool. Let's just hope it's not a glitch :D