Board Thread:Questions and Answers/@comment-26422643-20150522041805/@comment-26404239-20150522050803

Completing tha daily mission won't get you additional reward, the only thing you're missing are the rewards for the two Kebiishi missions.

Personally, I'll prioritize looking for Urashima and Nagasone because of the 10x drop rate campaign but if you care more about Jiji or Kogitsunemaru then just focus on leveling up your team to get to 5-3/5-4. You will most probably activate the Kebiishi on 5-3 and 5-4 anyway if you decide to farm them.