Sincerity?

A silver-haired anime girl extends her hand forward in a dimly lit, reflective environment. The scene transitions to a smiling brown-haired girl in a school uniform, then to her walking away from a shop with a sign in Cyrillic, followed by a girl with purple hair riding an escalator in a tunnel, then a blurry shot of a girl with pink hair on a train platform, and finally a girl with a large blue bow walking down a cobblestone street.