消せるペンってフリクションみたいなのか、私気になります (感じ方には個人差があります) https://news.livedoor.com/article/detail/24514414/ こたつニュースに載ってないのでソースググった https://www.theguardian.com/politics/2023/jun/27/rishi-sunak-seen-using-erasable-ink-pens-on-official-documents-and-in-meetings

The prime minister has regularly been pictured using the disposable Pilot V fountain pens during his time as chancellor and prime minister, most recently while taking notes during the Cabinet meeting two weeks ago.

多分、「V-Pen - Fountain pen」っぽい https://www.pilotpen.co.uk/en/catalog/product/view/id/2594/s/v-pen-fountain-pen-medium-nib/category/16/ 知らんけど