At this point, no PVs to be expected. If these songs end up on another release in the future, maybe then.
A few rankings are going up here and there and digitally it seems to be doing okay.
https://sp-m.mu-mo.net/rank/
http://recochoku.jp/ranking/album/daily/
http://music-book.jp/music/Ranking/Album/daily
Also A COMPLETE is on sale on Recochoku and trailing TROUBLE at no.3, lol. (899yen!) A SUMMER BEST is the same price on music.jp and outdoing TROUBLE for now too hmmm~
Officially it seems they filed æternal as eternal on JASRAC as well so some services like mu-mo and Recochoku have the song as 'eternal'.