Erena Mochizuki is one of the main characters in the anime Girl Friend Beta. She's a third-year student in the photography club. She's an outgoing and talkative girl who always says what's on her mind, she loves to take pictures of girls. Fumio is her model and the closest person to her.
- She likes to take pictures of beautiful girls, sometimes having a really perverted laugh when she gets good shots, and she seems to get passionate while doing that.
- She can get close physically with Kokomi at episode 1, she even winked at her, and squealed over her cuteness after she took a photo of her.
- 3 years after they met each other, Erena knows everything about Fumio.
- She fell in love with Fumio at first sight.
- She thinks Fumio is a cool and mysterious beauty.
- Fumio was the one who really inspired her to take pictures.
- She told Fumio what she loves about her.
- She wants everyone to know how wonderful and great Fumio is.
- She got a positive reaction when she told Fumio about her "unrequited" love at first sight.
- She successfully showed everyone how cute Fumio is for her.