I got a quest from the BOSS icon. It gives me this quest. Sometimes when I kill the majin mobs that spawn randomly like the event dragon/fish they drop these...

Did you see that many people have green chinese letters next to his name? that is a tittle, and with 250 of those coins you can get a title (it gives you 5% anticrit).

Thanks for the info :D With the new patch its not green chineese letters... most people have "Friend of Trunks" title.

When you kill the event boss, you can use them to buy titles from the machine that pops up after it dies.

you can also take the quest if you right click the green dragon head icon , kill 30 majins then when the boss is dead hand in for 2 x gold coin you can get a title of 30 gold coins , to speed this up you can trade 20x silver coin for 1x gold coin

What exactly are these blue and pink coupons/tickets for? Also where can they be used?

Upgrade tickets red for weapons(Gloves/Sub-Web) From +0 (Non-upgraded) to +10,12,15 for a certain amount of time 2days,3days 15days

Blue are the same except for Armor(Jacket,Pants,Boots).

You Are Awesome!!!! Thanks!

For upgrade armors (blue)/weapons (red), the ticket says how much "+" upgrade, how many days it works (tickets are only temporaly) and max lvl could have the item you want to upgrade.
Also, to use a ticket the item must be +0 (you can use it in upgrade merchant use ticket like a normal stone).

They can be used at Upgrade Merchant (Forgot that part)