What's the "right" order to play the Grisaia Spin-offs? I just played through the main branch of the "Laybrinth of Grisaia" game, and afterwards went looking for the following game ("Eden of Grisaia" or something like that) in the steam store.

It seems it isn't released yet but I found three spin-offs:


The Leisure of Grisaia
The Melody of Grisaia
The Afterglow of Grisaia


My question is, is there any order that I should take in playing these? I guess "Leisure" should be first, since the other two are spin-offs to the labyrinth and this to the original, but especially for "Melody" and "Afterglow" I'm not sure which to read first...

I'm sorry if this is off-topic for this side, but arqade didn't seem like the right place, either...

EDIT:
I found this graph showing the relation between the different games but it didn't help me in deciding which of "Melody" and "Afterglow" to play first.
Leisure of Grisaia = Grisaia no yuukan
Melody of Grisaia = Grisaia no senritsu
Afterglow of Grisaia = Grisaia no Zankou
Le fruit de la grisaia = Grisaia no kajitsu
Le laberynth de la grisaia = Grisaia no Meikyuu
Le eden de la grisaia = Grisaia no Rakuen

Right order


Parent game: Grisaia no Kajitsu.
Side story: Grisaia no yuukan
Sequel: Grisaia no Meikyuu.
Side stories: Grisaia no senritsu and Grisaia no Zankou. Since you completed the main game the side stories can be played in any order.
Sequel: Grisaia no Rakuen