This is a pink Iroshizuku ink, or it may be their only pink. I’m not sure and too lazy to figure ut out.
It is the only ink I use in my pink TWSBI Eco. This is another of the inks that kind of perfectly embodies what I love about Iroshizuku inks. It stries that subtle balance between darkness and vibrancy.
This was also the first ink I got after I decided to get even more into bolder colors.