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Missions
Fame
Clear any 1 event mission: 100 Fame
Clear any 5 event missions: 500 Fame
Clear 夢見る乙女な番人 (30/3) with 5 or fewer units in Sortie Team: 500 Fame
Clear オークの志願兵 (40/5) with Gold-rarity or below units in Sortie Team: 500 Fame
Note: Sortie means the # of units you have in the blue box you go with on a map. It doesn't include Prince-kun
Pic of what a Sortie Looks Like
Source: http://aigis.wikia.com/wiki/Blue_Oni...d_the_Oni_Clan