Wilhelmina tries to cook something nice for Shana.
Also, in a weird way, Wilhelmina's jealousy over Shana learning to cook from Chigusa rather than her. Despite the fact that Wilhelmina is confirmed to be a very poor cook.
In the beginning, Shana is highly resistant Yuji calling her by her "name". A subtle CMoH happens the first time she refers to herself by the name Yuji gave her.
The final episode of the second season, where Shana jumps towards Yuji and cries in his arms. Considering her usual attitude, that's a pretty big moment.
When the relationship between Oogami Junko and her mother was fixed in episode three of the ova series. The flashbacks at the end are sad, if you think about it too much.
Keisaku's confession to Margery, and the following They Do moment.
