Laid-Back Camp Season 4

The Outdoor Exploration Club has a new member—Mei, and she's joining them on a club camping trip to Karisaka in Yamanashi. She and Aoi head there by bike, while Chiaki and Toba-sensei travel by car. Rin has plans of her own, and appears to be going solo to Saitama...? (Source: Yuru Camp Wiki)