Four Seasons: Fuuka to Nanami
English name: Four Seasons: Fuuka and Nanami
Type: ONA, Episodes: 1
Aired: Oct 30, 2015
Studio: Shimogumi
Source: Original
Rating: G - All Ages
Synopsis:
A spin-off episode of Yamaha Motor’s original video animation “Master of Torque,” featuring Fuuka Torimi and Nanami Hiyoshi that illustrates the changing of the four seasons and the different joys of motorcycling that come with them.

(Source: Official Site)