Sister Kyun! ~A girl came to the house~!

When Hirokazu, the older sister who loves Hirokazu, returns home after buying her favorite magazines and sweets, Hirokazu's classmate Akasaki comes to play in Hirokazu's room. Honoka is shocked to see the two of them having fun. She can't help but send Hirokazu an email with a crying emoticon. ``...Hirokazu-kun... are you going out with the girl from earlier?'' Hirokazu denies, feeling hesitant. Well...if we're not dating yet...before that, I'd like you to continue...