Breaking Points

A Breaking Point is "the ultimate expression of one's abilities"-- a powerful move unique to the user, which can only be used whilst wielding a Boss Sword.

Breaking Points appear to be hyper-enhanced versions of a character's preexisting abilities, and seem to be rooted in some kind of deep inner desire or goal. For example, Nephthys wants to be able to protect those she holds near and dear to herself, so her BP is making them invulnerable.

Activation
Breaking Points are a release of Ruin Energy, which are collected after defeating monsters in battle. At first, Ruin Energy can heal and boost a person's strength; however, it can only be collected up to a certain point. After a person reaches a certain amount of Ruin Energy, they can activate a Breaking Point. However, an overflow of Ruin Energy can become extremely painful-- symptoms of this are glowing eyes, nausea, fainting, and dizzy spells. Not using the excess Ruin may eventually become fatal.

In order to release a Breaking Point, one must have a complete Boss Sword. The user will channel their energy through the sword as if it were an extension of their body. If the action is successful, the Breaking Point will be triggered and the center of the sword will begin to glow, eventually manifesting into a unique ability. If the ability needs to be used on a target (like Body Snatch and Wear Protection) the user will have to select a target and successfully use their Breaking Point on them in order for it to take effect. Otherwise, it will either manifest immediately (Event Horizon) or the user will need to fulfill certain criteria to use their Breaking Point to maximum efficiency (Hunger Strike).