Originally Posted by nip101

The 4th map for the event drops a lot of gifts, like 2-4 a run, if your able to farm it. Also has good xp so its not a waste like the special stage for them. And as a bonus tons of gacha seeds. Downside to it is almost no Manyus and no raid bosses.

?/4 (4th event map) has a very low xp rate compared to ?/3 and story maps that are above 4 or 5, cant remember. So you dont farm ?/4 for xp but for gifts and normal gacha seeds which required if you want to drop 4* girls or ampy if you are really lucky.