Could somebody please translate the letter so that we may have some context?

VladDracul2 said:

Could somebody please translate the letter so that we may have some context?

It looks like it's a reverse arm graft, a type of surgery, this is what I translated with Google:

To Shikinami: Congratulations on your launch day.

On a different note, I finally managed to complete the arm replica.

Let's do the reverse surgery right away. The gloves and bracelets are in the mountains.