Good grief

In a room with a green couch and a painting on the wall, a group of four anime characters are gathered around a table. A black-haired girl in a white and grey uniform reacts with shock as a pink-haired girl with a black bow, wearing a white and black outfit, suddenly appears behind her, holding a fan and delivering a powerful blow that sends the black-haired girl flying backward, accompanied by a burst of orange and red energy lines and Japanese sound effects.