So I can't feed my sprite anymore?

Well, I'm sure this is a place to ask questions too. (And pardon the title. =P)
Anyway I wanted to know if it's normal I can't feed my sprite anymore (like I can't click on the mats, where I am able to feed). He is already at lvl 100. I'm not sure if this is a bug or if there is a certain amount to stop feeding, but I am assuming because that's all the upgrades the sprite has.
I have np feeding my other sprite, even at lvl 100. But maybe it's because there's room for upgrades.
I hope this is clear of what I'm asking. Hopefully this makes sense to everyone.
Anyone have this issue? I'm sure I'm not the only one. If you know, pls post here. Thanks for reading.

Omg, derp! I completely forgot about this! o.o Yeah, that totally makes sense! TYSM for the reference! Honestly I should really use the SK wiki often since it's been a while...
Gosh I had a brain fart! o.O
Now I don't have to worry about being broke, so that's all good. x)

the only problem is when you decide to feed it reset star, I guess you should bother GM for that.
Have you read the wiki page "Battle Sprite"? As it explains, sprites actually go up to level 105, even though levels 101-105 are all displayed as "100". Basically, you get these extra "level 100"s because you have a few more perks to acquire. At the end of level 105, you are not able to feed it the preferred food to promote it to level 106. The sprite is complete. Make sense?