Anime de Training! Ex - Season 2 Episode 2 Running XX Train!? Training Anytime, Anywhere
Overview: Eri, while heading for school, teaches the viewers the invisible chair and calf raises, in a train. Afterwards, she introduces them her friend, who thinks Eri and the viewers are a couple. Soon after, they unexpectedly encounter Shion, who is working at her station while trying to hide her secret from them.