Succubus/Lust Friend

Succubus (サキュバス Sakyubasu) is an enemy and potential friend in Lust Friend.

Strategy
Befriending Succubus is extremely easy: simply use the Action skill and then "Approach her" to obtain the Friend Flag.

If you wish to defeat Succubus, she is weak to Mouth attacks, and her most dangerous skills are Pussy element.

Sidequest
After you've befriended Succubus, you can talk to a succubus NPC sitting on the bench outside Fess Tower, who is looking for a friend. Introduce Succubus to her and the NPC will disappear. Leave the area and return. There will now be a glowing circle where the NPC was sitting. Examine this for a Rainbow Fragment.