Despite not knowing exactly what appeared behind those two windows, everything that happened to that mural a few seconds ago already spoke volumes. According to Motan's judgment, the monster hidden in the painting might have been lacking a bit in acting skills, but its intensity was quite on point.
You have to know that the ring on his left index finger, "Diana's Bridal Gift: Crystal Heart," is something good that greatly exempts the wearer from mental attacks and mental control, yet Motan still found it hard to control himself when the monster tried to take over. Although he quickly resisted the control with extreme willpower, it still proved from the side that the ambushing monster in the painting was indeed not weak.