Uni Ball 0.28 is my favourite pen to write notes with. Campus notebooks from Japan are amazing - would recommend! And yes, I can't write on lines. : r/NoteTaking
Amazon.com : Kokuyo Campus Notebook, B 6mm(0.24in) Ruled, Semi-B5, 30 Sheets, 35 Lines, Pack of 5, 5 Colors, Japan Improt (NO-3CBNX5) : Office Products