Katies Craft Studio | My new favorite pen for writing tiny?! Comparing to my go-to gel pen; it might not be for you... @KatiesCraftStudio | Uploaded May 2022 | Updated October 2024, 2 hours ago.
UPDATE: I forgot to show how the kakuno writes on Happy Planner paper-- in my hands it doesn't feather and if you write quickly it doesn't bleed through, but if you write more slowly then a bit of bleedthrough happens.

Click "show more" to see links to everything mentioned:

Pentel Energel RTX 0.3 mm Needle Tip:
jetpens.com/Pentel-EnerGel-RTX-Gel-Pen-Needle-Point-0.3-mm-Black/pd/21489

Pilot Kakuno Extra Fine:
jetpens.com/Pilot-Kakuno-Fountain-Pen-Clear-Extra-Fine-Nib/pd/21932

HP 32lb premium paper:
amazon.com/HP-Printer-Paper-Premium32-Letter/dp/B000099O2W

Ink Samples:
gouletpens.com/collections/ink-samples
yosekastationery.com/search?q=samples