Recently, My Sister is Unusual OVA

When Moa finds a college student working at a cafe in town she decides to confess her feelings. However, her brother Shoutarou walks by in the middle of it and jumps to the conclusion that she messed up somehow. When Moa explains that she was going to go to the movies with him Shoutarou teases her about how a college student would never go out with someone like her. But he is proven wrong when she manages to set up the movie date over text. Worried over what will happen on the date, Shoutarou asks Yuuya to hang out with him on Sunday so he can follow his sister around on her date.

Recently, My Sister is Unusual OVA was interesting to watch. It had both the date scene for the first half of the episode as well as a Christmas episode for the second half of the episode. There were multiple panty shots, as well as girls in revealing Santa outfits. There is also a scene of mitsuki in her underwear talking to Hiyori about her plans for Christmas. I watched this because I thought it may continue the story, which it kind of does. But, you don't need to watch it.