Haruka is described as having black hair and blue eyes.
Azusa is a team mate of Haru in the Iwatobi Swimming Club (which is canon break, since in the original Free! series, the team's not co-ed). She sees him as a good friend and hopes he hooks up with Makoto after Kou told her that they are very close. She's cheerful when she first sees Makoto and Haru having become boyfriends and finds them very cute until she almost drowns. Spotting Haru on top of her after having saved her, she realizes she has feelings for him (and then writes on her MySpace about him).
On Chapter 29, Haruka confesses his undying love towards Azusa.
Over the course of Chlorine Grown Roses, Makoto and Haruka start dating. Eventually though, they break up on Chapter 26, because “I really feel liike we should be best freinds instead of boyfreinds. This relationship is awkward. Im sorry.”. And then, Haruka proceeds to leave like a savage, as character-critique-central so eloquently put.