Motto Naisho no Koibito

his is more on Hinako and Jun and their still-secret relationship (except ​the parents). While out together, Jun is scouted to be in an advertisement. Hinako, is both excited for him and apprehensive about it once she finds out who female model is. After fits of jealousy and tears, the picture that's used is one of both Jun and Hinako.

(Source: Wataame Shoujo)