Here are some friend codes to use:
333XBCG5
T76EBSMK
9JSPXBEP
SM748Q6S
242VU7W5
XFKMSHRD

Make sure to use a code before you purchase a subscription in order to get some free rewards!

step 1: go to the mogstation and make an account
step 2: go to the "enter recruitment code" from the dashboard
step 3: enter one of the above codes to get your rewards