There is only a partial patch that translates Tsubame,Margit,Monshiro,Kokoro and Iyo route.
Wairu translations is currently doing the TL for Koyuki´s route but they´re still at 25% so it will take a while before it gets released.
''p.s. We have a hidden suprise for the public, you will see it eventually when the product is completed!''
Now i´m curious.
And a bit afraid of this surprise of yours...
I´m pretty sure the guys that translated the first game of the Grisaia trilogy are planning on translating the second one too since they mentioned it in an interview recently.
I´m going to be honest and admit that i only played through it properly a single time,for the other playthroughs i just cheated my way through cause i didn´t want to go through all that grinding again.