Assists and SP

[Sasuke Uchiha]

OK... I have a question about SP

My initial question asked if I Summon, say Arith, how does Arith wind up vanishing? Do I have to Kill him off, or is my opponent forced to kill him off or what?

I have the Mark and Sigil of Lythia as an Assist... I can Summon certain NPC's to help me... Right now it Is Arith and Inirtias...

I'm fighting Jack Frost... I am about to summon Arith... That's 1 SP per post... I'm being told that I have to Spend 1 SP Per post, even 1 SP when my opponent posts....

How the hell does that make any sense at all?

I post and summon a character... spend so many words just summoning him and an SP, but I have to pay an SP for my opponent to use him as well? Seems almost retarded? Yes or no?

No, it is not retarded.

If you spend 1 sp, the npc you summon as an assist will have the full power of their stats backing them, however, if you do not spend sp for your opponents round (Its the same with power ups, you have to spend sp to stay powered up in your opponent post) then the NPC you summoned as an assist becomes just a regular old npc without stats. They don't have to vanish or even remove themselves from the fight, but their hits are no longer backed by the stats and can easily be disposed of.