Any other way to obtain more Shakatu's [Event] Seals?

Heya all, Wraithhunter here, simple question, but I was wondering if there was any other way to obtain more Shakatu Seals. I currently have 26, but seeing the rewards going all the way up to 150, I thought to myself if there is any other way to obtain more, either from event quests or does the Black Spirit's Adventure have a chance of giving you some. Of course I know of the daily rewards, that's how I got my 26 in the first place but still. If there isn't that's fine, but just figured to ask. Oh and if anyone can tell me what the Weapon/Awakened Weapon coupons (7 days) are exactly, and are they really worth the 150 Shakatu seals lol. That would be great, thank ye.

 

Not sure if there are more ways, but I know they are sometimes given through the log in calendars (don't remember the exact name) for example: rookie.

 

Ah I see, I have been getting them through the returning and another tab in the daily rewards, but to be honest with 5 tabs of "daily rewards" I forget to check each one lol. But I'll check tomorrow when I get on the game, thank you though.