Well, I went for a walk along the river with two friends, and one of them was feeling lazy to walk, but since he used to be an avid idol fan, I blared the upbeat song by B Komachi from [Oshi no Ko] on my smartphone and encouraged him by saying, "Come on, just a little bit more!" 
So, [Oshi no Ko] is useful for welfare and nursing care. However, even though they are both same-sex trios, there is a big difference between the new B Komachi and Ossan Komachi.

What does this photo have to do with [Oshi no Ko]? | 西尾一朗's post