Added the unique skill "Solitariness"

The unique skill "Solitariness" has been added to Mareeta. Holders of this skill have their Atk increased by 2 when they are not receiving support effects.

This effect was inspired by the skill in FEH. However, the activation requirements have been changed. Since Mareeta is a spoiled girl, I made her unable to show her true potential when she is under the support effects. Also, receiving support effects is not ally or foe related, so this skill can numerically express that her sword is dulled against Eyvel in Chapter 5.

Normally, the more support effects one receives, the better, but in order to increase the Atk under the effect of this skill, the opposite concept must be considered, which could cause a miscalculation. Despite the fact that the addition of this skill is a pure buff, it may seem rather difficult to handle, but I decided that Mareeta should be difficult to use, so this is what I did.

This skill will also not activate when receiving support effects from the tactic skills.
If the support effect is reduced to 0 by the Disturb skill, it will be activated.