Citra

Citra (シトラ Shitora) is an optional boss and potential friend in Lust Friend. She comes from a collaboration with the image collection TagtrauM. To encounter her and her sister Plana, you must go to the basement of the Fess Town church, examine the book and input the code "6O1vqI" (found in the image collection).

Profile
''The younger of two succubus sisters, originating from a collaboration with the image collection 『TagtrauM』. She's not that interested in humans, but is interested in their culture (e.g. entertainment & food). She only sees humans as tools.''

Strategy
To befriend Citra, use Joke followed by "Impersonate Fess" twice, then use Talk followed by "What do you think of Plana?" 3 times. If you're willing to use Gift, then note that Shandilla only likes two of the gift types, the Love Pendant and (to a much lesser extent) the Super Spicy Chicken.

If you instead wish to defeat her, she's weak to Chest attacks.