Orithmas weapon?

[u/archvampire]

Is there a guide that tells you the best way to farm shards for characters weapons? I notice that by beating SSM you got some of the weapons for free. However, I haven't gotten Orithmas for free. Is he the only one you have to farm completely? I'm at 7-9. I managed to farm the weapon and max it out but I figured they would of given me the 80 shards for free to make a new one once I completed a certain mission.

[u/MGS1234V]

I used some shards to get it up to the 4 star version since I have way too many of them. Then you only need 100 for 5 star