Sacrifice. The New Age Series, #5

After returning to Meridiana, the professor begins work on creating a new bionic arm for himself. Unfortunately, his attempts to clone one become futile. Failure after failure, he begins to slip into madness. As pain overtakes him, he starts to lose control and begins to spiral mentally and emotionally. The sacrifice becomes too much, and only Hokura can bring him out of his darkness. But she's harboring a secret - something she's trying to keep from emerging to the surface.
Who will stand by your side when your inner demons come to light?