Tourmaline’s ribbons had merely been a brief distraction for Sein; his primary focus remained on analyzing demon bloodlines.0

The more he delved into the subject, the more he realized how ignorant he truly was.0

Each day, he discovered something new.0

With the demon and devil legions bound to leave Sandstorm World soon, Sein cherished every second of this fleeting opportunity to learn more about them.0

Not only was he conducting research on the Inferno War Devil with whom he had signed a short-term agreement, but he had also enlisted the help of his mother-in-law, who was still recovering, to hire several other devils and even demons of varying species.0

The life levels of these new test subjects were comparatively lower, ranging from Rank One to Rank ...0