Of course, the group's sixth single "sister's noise", which debuted at #1 on Oricon's weekly single chart, is currently being used as the first opening to A Certain Scientific Railgun S. Other notable songs that fripSide has contributed to the Railgun scene include "only my railgun", "LEVEL5-judgelight, "future gazer", and "Way to Answer".
In terms of "eternal reality", the single will be available for purchase on August 21st. Those who are interested can choose from three various editions - a regular edition and two limited first editions.
