|Occupation||Fragment of Duke MacGahan's memory|
|Age||Unknown (presumably in her late teens)|
|“||I'm really a wimp...No wonder he'd break up with me.||”|
Sissi (シッシー (romanized: Shisshī ) ) is a supporting character in The Crooked Man. She is the young woman David meets while investigating the abandoned hotel on Scene 1, claiming to be looking for something precious that was given to her by her boyfriend before he left her. In the end, Sissi is revealed to be a fragment of Duke's memory.
Sissi is timid, insecure, and gets scared easily, but kind. Her character is deliberately a reflection of David's own personality to teach him a lesson.
David encounters her in the abandoned hotel. She looks for a precious box her boyfriend gave her and encounters many dangers over the course of the Stage/Scene. First, the floor cracks and she is saved by David. Then, she gets attacked by the Crooked Man and David has to save her and later fight the creature.
After David defeats the Crooked Man, he finds a frightened Sissi blaming herself for what happened and wondering why she is bothering to find the box her ex-boyfriend gave her. David is given two options in order to console her.
If David tells her not to cry, the Bad End “What A Sissy” is obtained. Sissi decides to give up on her quest to keep fond memories alive and drop the precious box her boyfriend gave her. As she begins to leave, she is dragged back to the hotel and brutally mauled off-screen by the Crooked Man, who then kills David.
If David tells her that there is nothing wrong about crying over her lost love, because of his ex-girlfriend Shirley, Sissi decides to keep the box and remember the fond memories with her ex. She kisses David as thanks for helping her and gives him a note to go to the law school in Stage 2.
She later appears in Stage/Scene 4, helping Paul into finding David and acknowledging that she is a crybaby and a sissy.
- Sissi represents Duke's regret over the lost love of his ex-girlfriend. It is implied that her appearance might be based on Duke's ex-girlfriend.
- She says that she used to spend time with her ex in the hotel, who later broke up with her because "kindness was all she had". It is actually the reason why David's ex-girlfriend broke up with him.
- Her name is meaningful, since she feels like she's a sissy for being unable to let go of her fond memories of her ex-boyfriend. She also lampshades it from time to time.