One of the three middle school girls whom Koyomi Araragi and Shinobu Oshino meet 11 years in the past. She, like the other two, comments that Shinobu looks cute. She also assists Koyomi in knowing the current date and time.

Second season of the Monogatari Series, part 1/2. Contains the arcs Tsubasa Tiger, Mayoi Jiangshi, Nadeko Medusa, Shinobu Time, and Hitagi End, from the Nekomonogatari White, Kabukimonogatari, Otorimonogatari, Onimonogatari and Koimonogatari light novels, respectively.
 
These stories take place after the end of the summer vacation when the apparition of the bee had left and the apparition of the phoenix avoided any consequences… Now that Koyomi Araragi and the girls were entering their new school terms, they were once again about to encounter supernatural beings…but this time, they may not be so easy to deal with.
 
Tsubasa Hanekawa, Mayoi Hachikuji, Nadeko Sengoku, Shinobu Oshino, and finally Hitagi Senjougahara. The girls’ loneliness, their confessions, and their departures… 5 new “stories” begin now.
 
(Source: Aniplex) 
 
Notes:
 
 Includes 3 recap episodes from the TV version (Ep. 6, 11, 16).
 
The recap episodes were not included in the Blu-Ray version of the anime.

Joshi Chuugakusei