Any info on:

How we will get the costumes?
Cap for mystery scrolls?
Rewards for Plate event?
Do discounts affect coupon prices?

None of that info is in the text.

1. All it says about the costumes is that you need to get fragments, but nothing about how you get fragments. So no info on how to get costume

2. There was no mention of a cap for mystery scrolls which can be taken as there is none, but there was no mention of a cap for the Ramen event which had a cap at 20/day. So no info there.

3. All it says about the rewards in the plate event is that you can trade your points for "various rewards". No information on any specific rewards.

4. All it says about the discount for the sage event is that it can be up to 40%, no mention about if it is a coupon and ingot discount, or just an ingot discount.

Trust me I read the post, these questions have no answer in that text.