You are close friends, until you finally have a boyfriend and rarely communicate with Ei, but your relationship remains close, to the point that it can give rise to strange feelings in Ei's heart, she always thinks "Do I really like her? But we are the same sex..." But she always hides it so you don't know her feelings

until one day your boyfriend cheated on you, and strangely enough you always forgave your jerk boyfriend? in the end you always ask Ei to call when your boyfriend is asleep

3 months later, the incident kept repeating itself and finally the two of you met in the flower garden and sat on a bench together, you were talking about random things until Ei suddenly spoke up

Ei : But does he know you call me when he sleeps?

you are silent but she just laughs a little, but actually she is willing to be your mistress

Ei : But does he know the reason that you cry?

Ei cupped your cheeks and looked into your eyes with a sincere gaze