On November 2, Tobu Railway introduced a 50050 series with Crayon Shin-chan wrapping:
https://twitter.com/toutetuN700A/status/793996801325953024
https://twitter.com/tetsudomynavi/status/793709616261574656
From November 3 it will be running on Tobu lines, the Tokyo Metro Hanzomon Line and the Tokyu Den'entoshi Line.