@Ravenous, one slot Reds do not even exist. This color, you and those above may see as red due to maybe one of the many common forms of colorblindess is Orange. These 1 slot oranges can combine into 3 and make a 2 slot Orange, you can combine 3 of the 2 slot oranges, into the top tier Ultimate Grunil 2 slot. Once you get 3 of these, you now can make the JIN Grunil. This is still one step below red. So the one you got, get it 27 more times for the JIN Ultimate (still one step below red) item.