“Please do not use smartphones while walking” – Yumiko Yokoyama (Art Director) and Takahiro Kadowaki (Illustrator) for the Seibu Railway through the agency of Dentsu Inc. V&A, Japan
“Please do not use smartphones while walking” – Yumiko Yokoyama (Art Director) and Takahiro Kadowaki (Illustrator) for the Seibu Railway through the agency of Dentsu Inc. V&A, Japan