Kyoya decides to step in and do whatever he can to salvage the project that the management of his company is running into the ground.
To the point of depression 
and getting so torn up...
...لدرجة أن تصاب بالاكتئاب وتتألم حزنا
au point de carrément déprimer ?
Fino al punto della depressione,
così arrovellato su questa cosa...
Você fica depressivo,
se quebra por dentro...