'''Basic Trope''': A nice person (either genuinely, or not) with a [[AxCrazy dangerously unstable]] side.
* '''Straight''': Masako is a [[GenkiGirl genuinely upbeat]] and [[NiceGirl kind-hearted]] girl... She also loves beating up the bullies that constantly harass her. And she does with a smile on her face. She also loves to make terrifying threats to Kenji.
* '''Exaggerated''': Most of time Masako acts like she was [[IncorruptiblePurePureness purity incarnated]]... But whenever she flips, she is ''so'' insane, that no one would even dare to go near her, not even the most detached CloudCuckooLander.
* '''Downplayed''': Type B {{Tsundere}}, with her violent side exaggerated and played for laughs.
* '''Justified''':
** Masako comes from a messed-up family with a DarkAndTroubledPast.
** Masako has a severe case of Bipolar Disorder.
** Masako is suffering serious trauma and has Post-Traumatic Stress Disorder.
** Masako suffers from Multiple Personality Disorder.
** Masako suffers from Borderline Personality Disorder.
* '''Inverted''':
** Masako appears to be a completely deranged lunatic. However, [[LoonWithAHeartOfGold she has a kind, sweet]], [[FreakyFashionMildMind and loving side]] to her personality as well.
** FaceOfAThug
* '''Subverted''': Masako may appear deranged, but she's actually ObfuscatingInsanity.
* '''Double Subverted''': ...Which is a facade, revealing her to be TheOphelia.
* '''Parodied''': Masako runs around, carrying large and dangerous weapons and uses them to relieve her frustrations upon Kenji in a slapstick way. Masako also pops up near Kenji with a NightmareFace every time, scaring the piss out of him.
* '''Zig Zagged''': Masako alternates between AllLovingHero and TokenEvilTeammate.
* '''Averted''': Masako is [[NiceGirl nice and sweet without the crazy]], [[AxCrazy or crazy without the sweet]].
* '''Enforced''': "Our show's source of [[ComedicSociopathy humor]] will come from Masako switching between huggably cute to pant-wettingly scary.
* '''Lampshaded''':
** "Hi, Kenji. Would you like '''TO DIE?!'''"
** "The puppy-dog eyes would work a lot better if you weren't holding a severed head, you know..."
** "Now she seems really adorable, but wait 'til she gets really ticked off... it ain't gonna be as pretty."
* '''Invoked''':
** Masako isn't crazy, but Kenji assumes she'll snap one day.
** Masako is a straight-up whacko, but uses a cutsey facade to hide it because [[FaceOfAnAngelMindOfADemon this way, people rarely suspect her]] and because [[DissonantSerenity it freaks her victims out]].
* '''Exploited''':
** Masako pretends to be insane because she likes being alone.
** Masako pretends to be crazy [[ItAmusedMe to troll her friends.]]
* '''Defied''':
** Masako refuses to let insanity get the better of her and channels it into [[SociopathicHero sociopathic heroism.]]
** Or she decides to finally TameHerAnger and stop any new madness sprees.
* '''Discussed''': "Run for it! She's adorable and deranged!"
* '''Conversed''':
** "Man, she's as crazy as a June bug in July and twice as cute!"
** "This should be Masako's selling line: [[JustForFun/ComeForTheXStayForTheY 'Come for the pretty face and sweet personality, stay for...your self-preservation.']]"
%%* '''Implied''': ???
* '''Deconstructed''':
** Masako is AxCrazy, because years of constant abuse from her family and friends has chipped away at her sanity and she can no longer bear the emotional pain.
** Masako is a nice person, but the stress inside her boils and she finally [[FreakOut snaps]] and decides to hurt her loved ones.
** Masako's friends can't handle her psychotic episodes and either gradually [[ScrewThisImOuttaHere fall away out of fear or frustration]] [[TheDogBitesBack or snap back at her]] after a particularly bad episode.
** Masako's friends and family don't recognize her problems because she seems too cute to have serious issues. As a result, she doesn't get the psychological help she needs and ends up hurting someone.
* '''Reconstructed''':
** Masako channels her anger, stress and pain by going insane and physically and verbally lash out at her tormentors, justifying her actions. Between periods of PayEvilUntoEvil she's as cute and friendly as can be.
** Masako endures it and remains friendly but still manages to creep her friends and family out with her [[DissonantSerenity eerily calm]] behavior and occasionally crazy actions.
** Masako and her friends eventually decide to stay and help her - if eliminating the psychotic side isn't plausible, then redirect it towards the bad guys or something.
Oniichan, please go back to CuteAndPsycho... OR I'LL RIP YOUR FUCKING FACE OFF!!!
%% Optional items, added after Conversed, at your discretion:
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???