Trying to identify an old Japanese pen based on description : r/pens

Shuttle Art Gel Ink Ball Point Pens, 15 Pack Black Japanese Style Pens, 0.38mm Extra-Fine Ballpoint Pens for Home, School and Office

Ink Brush Pen- 3 Size Black Shodo Japanese Chinese Calligraphy Pen for Beginners Writing, Lettering, Signature, Illustration, Design (Pack of 3pcs)

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5 Pack Muji Pens Japan Gel Ink Click Cap Black Blue 0.38mm 0.5mm

Zebra Blen

Japanese pens are the best to take notes with! : r/pens

Why Stationery Fans are Flocking for Japan's ¥5 Million Fountain

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Practising writing in Japanese with Japanese fountain pen and Japanese ink : r/fountainpens

Japanese Pen - Temu