Sleepy

Sleepy is a high priority as it strengthens the Dark Ninja substantially making it very useful in Guild Wars, Guild Raids, Tower of Trials and Spirit Highlands.

Additionally it provides one of the highest Quest Gold Buffs.

Hero Couple (Dark Ninja)
Upon reaching 5* causes the Dark Ninja attacks much more quickly and can quickly shred large groups of enemies.

Acquisition
Spirit Highlands Pet Shop
 * 4-11 (1 Frag)
 * 7-5 (3 Frags)
 * 9-10 (3 Frags)
 * 17-6 (1 Frag)

Available for Gems, Guild Coins and Honor Coins.

Secret Shop

Available in the Secret Shop - 5 excess fragments for 2 Sleepy fragments.

Skill 3 - Awakens the hidden special ability of Senior Dark Ninja

 * Quickly moves (infinite dash) to the attack target, and when dashing with a regular attack, can attack boss as a target at a certain rate.
 * When there are few enemy units in the skill's random strike attack, boss can be attacked.
 * Gold level limit of Dark Ninja increase (Senior - 10, T1 - 20, T2 - 50, T3 - 70).
 * When included in team Dark Ninja increases Medal buff by 50% More (T1 - 15%, T2 - 30%, T3 - 45%). These buffs are halved in the Time Shop.