I bought this pen purely for the Susuwatari design and I am surprised how much I like it. Nice heft, pleasing "click" from the knock, and the ink is excellent. I thought the 0.38mm refill might be too small, but I love it - great for very precise work.

BONUS: I am reasonably sure that the refills will fit Sakura Craft Lab pens if you cut them to the proper length, allowing you to use blue ink and sizes other than 0.5mm in those wonderful pens. I'll be giving this a try.

I like how it feels and writes. Needed a small pen for a small planner. The only reason it doesn't get 5 stars is that even though the ink was dried, my Japanese highlighters still smudged the ink slightly. My other pens don't smudge.

Love the pen body. Perfect and subtle design that brings me joy. The .38 was way too scratchy for me personally, but this was an easy fix to make. I just ordered a .5 mm refill when I ordered this, figuring it would probably feel like that. I tend to prefer thicker lines, but this ink is a smooshy dream even at .5 mm so I don't find myself missing .7 mm pens at all! Just keep your preferences in mind when looking at this pen and order a refill if you think you might prefer it!

I love all things Studio Ghibli! This pen is a welcoming addition to all my other Ghibli pens. This is now my edc pen which I watch like a hawk. I particularly love the .38mm tip. The icing on the cake is that it's SO cute! Highly recommend!

Ink seems to be drying up, no longer works after a few days. Luckily I bought another version of the One F pen so I just switched out the ink cartridge. Nice pen otherwise.

Subtle Whimsy

Ive been using it for a day and can already tell I like it. I was skeptical on the 0.38 since i like using 0.5 but its been decent

This pen body is WONDERFUL, the sturdy size and weighted tip, the nice clip, the satisfying click! And that's not even going into the adorable design.

The 0.38mm refill is on the slippy scratchy side for me, but not so much that I'm going to replace it before it runs out.

Solid everyday pen, but a bit scratchy.

Very sturdy pen body and the ink writes smoothly. The soot sprites are adorable, but subtle. If you are looking for a way to sneak some individuality into a more traditional office setting, this pen would be ideal. Take note of the tip size though as it may be too fine for some.