Scarlet Bloom / Big Sister's Birthday.Wishing to find a way to help Akane overcome her shyness towards the public, Aoi and Kanade decide to create a masked superhero named Scarlet Bloom as an alter-ego for Akane and give her a pair of glasses to hide her true identity, though, in reality, everyone recognizes her for who she really is and are only playing along. However, as her election rank rises to third place as a result of her heroic deeds, she finally realizes her sisters' deception when she saves a girl from falling, as said girl recognized her as Scarlet Bloom despite her not wearing the glasses...