Fukasugi Aiko
She is in really high spirits because she daringly confessed to her long lasting one-sided love and he said "Yes".
She is a bit of a fool and her specs aren't too high either, but she really wants to please and be useful.
It looks like she has some mental disorder like ADHD or OCD.
It seems like she feels the most useful when she has to fulfill abnormal requests.
If you don't request anything from her, she might do crazy things on her own, so you shouldn't hesitate to push your desires or fetishes on her.
Her feelings seem to be genuine, so when she becomes unstable, being loved by her boyfriend is the best medicine.
She doesn't have any good friends besides her boyfriend, so she is always trying to do something for him.