After last chapter, when Temari was riding high, Efa still occupies second place. It's like her relationship with Stoney is still just based on her body (or pictures of it) without any chemistry. Meanwhile hanging out with Temari is fun and cool outside of the ecchi.
Sure Efa is first girl, series-Title girl, presumably final girl. Maybe Efa is like a gravure-tsundere. "What you like me?-Then what if I make you photograph me semi-nude! No touching, jerk!" There needs to be some development (photography pun!) before Efa retakes best girl status.