I think it is colored lights illuminate the top during different occasions.
Nana.
Higashi no Eden (Eden of the East)
Plastic Memories.
Clannad: After Story.
Tokyo Magnitude 8.0.
Shigatsu wa Kimi no Uso (Your Lie in April)
Ano Hi Mita Hana no Namae wo Bokutachi wa Mada Shiranai. ( AnoHana: The Flower We Saw That Day)
Kokoro Connect.
A. true it is true because if you actually pay attention in class then you would get it right... jk have fun
