This tree has been growing in my boyfriend's parent's backyard for years, more than half of it is dying due to being hit by falling limbs from another larger tree. It has star shaped berries and they say it flowers but I can't recall seeing them and it's nothing like a flowering dogwood or a redbud when it does bloom.
Here is a good shot of the star shaped berries:
He's trying to save the part that's living by encouraging new root growth (the rest of the tree past that point seems completely lifeless)
Thank you! It has "flowered" The berries turned bright red and have opened up. I have pictures and am working on uploading. The fruit does look a lot like sacha inchi (although smaller)! I didn't know this plant existed as all of the tree guides I have seen are specific to my area (Northeast US) I bet it is somehow related, thanks! Will update as soon as pictures are uploaded.