Talk:Seishun Kozou ga Naiteiru / Yuugure wa Ameagari / Ima Koko Kara/@comment-24833026-20150511222327/@comment-6092594-20150516003236

You can look on their single profile page (oricon) and it shows how many weeks its been charting. Once the number doesn't go up, you'll know that its done charting.