I'd say it writes like an western EF / japanese F. Similar to my 3776 SF (without the soft nib of course).
I like mine very much. Smooth, reliable, does not dry out, works on most copy paper as well. It's also completely made out of metal and feels very well built. The only downside is the converter - it's a CON-40 style one and it's common knowledge that those kinda suck. And that taking the feed apart for cleaning is essentially not possible.
I love this pen! It writes extremely smooth and feels good in the hand. I found it when I looked for an EDC-capable pen, because I was annoyed by screw-on caps when I wanted to quickly take a note. And with other caps that only click in place I was always afraid of them falling of in my pocket or bag and making a huge mess. This is as easy and convenient to use as a ball point pen combined with nice writing experience of a fountain pen.