@petitnama Okay... I give up. It's a Sailor with a fude nib, but what's the model of pen?
@ggmartin
This is limited edition of Professionalgear slim with naginara-Togi + fude de mannenn, collaboration with Japanese fountainpen magazine, Syumi no bungubako.
https://www.ei-publishing.co.jp/product/goods/sailor_fudedemannen/
@petitnama I once made a fude modification on a cheap nib as an experiment. I prefer writing with a flex pen - but maybe I should have stuck with it for longer - or learned to write kanji characters.