Miyako Ookura
An inseparable childhood friend of the protagonist, after years of association Miyako has become keenly aware of his preferences, dislikes, hobbies, and mentality. Though impatient at times, she is straightforward and reliable, juggling her own hectic schedule while simultaneously keeping an eye on the protagonist to keep him out of trouble. Miyako is always happy to help a friend, and will unhesitatingly provide valuable information on romantic prospects without serious expectation of repayment or favors owed.