Not Japan but there are some nice chinese EV microcars, I'd really get one of these if they were available in Europe. But most likely it wouldn't pass any EU regulatory laws, or at least not for this price point (~$4500)
From the Wikipedia article, it sounds like a modified EU-compliant variant is coming to EU.
>In 2021, a Latvian-based company Dartz (known for their armoured SUVs) announced a plan to sell the Hongguang Mini EV as the Dartz FreZe Nikrob, with a starting price in certain European countries at around €9,999 and assembled in the EU by Lithuanian company, Nikrob.
https://en.wikipedia.org/wiki/Wuling_Hongguang_Mini_EV
https://www.youtube.com/watch?v=N6GjphV4DCU