This bowl from Ikkousha (111 Somerset Road, #02-15, TripleOne Somerset) had to be by far the spiciest ramen that I've had, surpassing the spicy tonkotsu shabu ramen from Tampopo. Then again, I've never really made it a thing of mine just to try spicy ramen so maybe I don't know any better. While this packed a respectable amount of (woody and almost herbal) heat in the still savory pork bone broth, it wasn't anywhere close lip numbing. So God Fire was really just an impressive name for their chilli based tonkotsu broth which I prefer less than their regular option down at Ramen Champion.
Strangely, the charshu that was served over at this outlet was much more thinly sliced that it resembled the ones down at Keisuke's Tonkotsu King.