Love contract with vampire: En-shar-ra

They have known human blood with lust, and have obtained eternal time, and therefore have become proud. Our doom is inevitable. Our sins cannot be atoned for, nor can they be forgiven. Then let us at least protect Mother Human ...... and her world. The 'Blood Covenant' that lives forever, he gives eternal life, I give crimson blood, from this blood, you can never, ever escape.

[From Google Play]