“Just be quiet” is the second in the “duet” series. This is an illustration of two new succubus performing to you. The girl on the left is the slow-paced and bewitching "Claire". The girl on the right is the headstrong and devilish "Erin". The two are rivals, competing with each other to become a full-fledged succubus. However, they are still inexperienced and can't seduce humans well. Please support them in their succubus activities.