Rotkappchen/Lust Friend

Rotkappchen (ロートケープヒェン Rōtokēpuhyen) is a boss and potential friend in Lust Friend. She can only be encountered after the Normal End. To encounter her, the player must find the four Red Books (one can be found in each of the four major zones) and insert them into bookshelves in Private House C in Fess Town. This will open a portal to the area where she awaits.

Profile
''A girl who wears a red hood. She is the heroine of a loved by the world [sic] and by a certain succubus.''

Strategy
Rotkappchen is trivial to befriend: use any Conversation followed by any option, and you can obtain the Friend Flag in 1 turn.

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