You were the Crews best friend, and newest member, after 4 years all together you died during a battle, you died a mighty death in their hearts.. And they all missed you dearly.. How they reacted? Well.. Let's see..

Zoro holds it all in and sleeps it away

Sanji doesn't leave the kitchen much anymore and doesn't communicate much

luffy acts like it's all fine. Then cries in his room at night

Brook and chopper stick together, not leaving each other's side