Kuretake Tegami Refillable Letter Pen Refill - Super Fine Lettering Tip - Royal Blue

It writes. Therefore, I can't give less than 2 stars, since its a functional pen.
Other than that: spotty ink, sprays & splotches, sounds/feels very scratchy, skips a lot, and is twice as expensive as the Letter Pens rrefills for the Cocoiro pen body. Yea it fits the Cocoiro body, that's why I bought one. I figured, I love the Letter Pens and this is double the price so it must be better. I was WRONG :( I just don't get why this one is supposedly better.