Uploaded February 2018 | Updated September 2026, 2 hours ago

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Tokyo Pen shop video explaining the modification to turn a Dr Grip 4+1 into a multi gel pen.
youtube.com/watch?v=_eg44uGhR1Q&t=11s

Picked up the Uni Style fit 4 shell from her shop,
tokyopenshop.com/limited-edition-c-84/limited-edition-disney-uni-style-fit-shell-4-p-1780.html

There were also a few of the Kumamon limited editions left, you can find them at her site as well.
tokyopenshop.com/limited-edition-c-84/kumamon-limited-edition-dr-grip-4-1-p-1367.html