That's not a bug buzzing around you, it's a Fairy!
Faires are small pets that each have a small stat increase for your hero or party and an additional resource associated with them. Each day you can collect these resources from the fairy page. Some give you gemology moves, others bless stones or angel tears.
Once you collect a fairy stone from an event or prize, click the fairy icon. It will now show the fairy on the lefthand side of the fairy screen. Click the unlock button in order to activate the fairy.
Deploying
You can have one main fairy and 4 support(friend) fairies. The friend fairies boost the main deployed fairies stats and in turn, your stats.
Pick your faries carefully as each have different strengths and bonuses.
Evoloving
Evolving fairies works on the same prinicple as evolving your angels. Instead of using serph stones however, you will need lilac stones from dragon taming. Each time you reach another rank you will recive an additional 10 lilac stones (you can also buy them for diamonds). Go to the evolve tab of whichever fairy you want to level. Click the evolve button and there you go.
Leveling - Character must be level 61 or higher
From ES elite battles, Astral child and up, you get green bottles of food called vitamins for your fairies. When you feed them, they will level and give you an increase in stats/BR.
Every 30 levels, you will be able to do a "breakthrough" to increase the daily bonus loot and to be able to continue leveling your fairy.
Go to the diamond shop and buy the needed level "fairy essence". The first breakthrough will cost 30 level one essences (300 diamonds total). If that patterns holds then you would need 10.5k dimonds to do the 5th breakthough.
