Reserved and somewhat shy, Haruto was disheartened when he learned that a
stranger would soon be living with him as his parents took in the
daughter of one of his father's acquaintances. Further exacerberating
matters was the nature of his new housemate. Yuzuki Eba was a girl his
own age, with a forward, friendly personality but also a clumsy manner,
which compelled Haruto to spend a lot of time with her, both as her
classmate and to keep her out of trouble.
This caused Haruto further
anxiety, as he suspected that living with and spending a lot of
time with a girl he wasn't related to might cause complications in
pursuit of his crush, Nanami Kanzaki. He was partially correct, but Eba
also helped Haruto, as being more sociable than he, she befriended
Nanami and brought the two closer together, and often provided advice or
support when Haruto's overtures went awry.