Haruka is very charismatic, formerly being the most popular member of ASRUN. In Minori's words, she is "the kind of idol who is able to give everyone hope for a better tomorrow". She is a strict and dedicated person, working in regular routines of rigorous workouts to stay at an idol's standard. However, due to her overly diligent nature, she has difficulty relaxing and giving herself a break. This dedication applies to her studies, as the VIRTUAL SINGERS mention her excellent grades. She restricts herself on sweets and pastries, which, in response, causes cravings. She is attentive to the schedules and specials of pastry shops.

Haruka is composed yet bold, unafraid to talk back and tease her friends. She is rather sporty, liking basketball, and as a child she was quite competitive. She also loves penguins, owns a ton of penguin merch, and sometimes gets emotional when receiving penguin merch as a gift.