The work deconstructs why Mikan chose to be antagonistic. It suggests that her teasing was a defensive mechanism to maintain a connection with Asahi without risking the rejection that a confession would bring.
Mikan watching Asahi and Youko from a distance, realizing that the "secret" Asahi now shares with Youko is deeper than any bond they had as children. [Rokumarusou_(Sanrokumaru)]_Soshite_Watashi_wa_...
The finality of the ellipses in the title suggests a quiet step back. It isn't a story of a dramatic breakup, but of a quiet, internal fading. The work deconstructs why Mikan chose to be antagonistic