#shigechi

Josuke 

Josuke would be genuinely disturbed by how sudden the change is. Before, you were basically Morioh's little ray of sunshine. Your Stand naturally filled people with happiness, and even when you weren't actively using it, you had a cheerful presence that made everyone feel better. Then one day you just... changed. Not gradually. Overnight. Suddenly you're glaring at people, saying cruel things that hit way too close to home, and smiling in ways that make everyone uncomfortable. 

At first Josuke would assume someone hurt you or that you're acting out because you're upset. But the longer it continues, the more worried he becomes. He'd spend a lot of time trying to get the old you back, bringing your favorite snacks, taking you places you used to love, desperately hoping you'll crack a smile that actually feels genuine. Deep down, he'd refuse to believe this is the real you.

Okuyasu 

Okuyasu would be completely blindsided. You're a kid. A sweet kid. A kid whose Stand literally makes people happy. That's not someone he's prepared to see transform into a tiny nightmare. The first time you insult him with terrifying accuracy, he just stands there staring. Not even offended. Just confused. "How'd you know I was insecure about that?" becomes a recurring phrase. 

He'd keep trying to treat you normally at first, figuring it's a weird phase. Then you start intentionally causing problems and laughing when people get upset. That's when he starts getting genuinely worried. Okuyasu isn't particularly good at understanding complicated emotional situations, but he knows something is wrong. No matter how mean you become, he'd never stop checking on you. Even after you tell him to leave you alone for the fiftieth time, he'd still show up with snacks and ask if you're okay.

Jotaro 

Jotaro would recognize immediately that this isn't normal behavior. Children can be moody. Children can be angry. Children do not usually undergo a complete personality reversal overnight. The moment he notices the change, he starts treating it like a Stand related incident. While everyone else is focused on your behavior, Jotaro is focused on finding the cause. He's seen enough bizarre supernatural nonsense to know that something external could easily be influencing you. 

What makes him uneasy is that your Stand's nature is so fundamentally opposite to your new behavior. A Stand that spreads joy suddenly attached to a child who seems to enjoy spreading misery? That's suspicious. He'd keep a very close eye on you, even if he pretends not to. If other people start getting frustrated with your behavior, Jotaro is usually the one reminding them that you're still a child and that something is clearly wrong.

Koichi 

Koichi would probably take the situation the hardest emotionally. You've always been sweet, and your ability naturally made people feel comfortable around you. Suddenly being on the receiving end of your hostility would genuinely hurt him. The worst part is that you'd know exactly what to say. One of the reasons people trusted you so much was because they felt safe around you. Now all that knowledge gets weaponized. 

Koichi would spend days wondering what he did wrong. Even after realizing the change isn't his fault, he'd still be heartbroken. However, he'd also become one of the most determined people when it comes to helping you. Koichi knows what it's like to struggle and feel misunderstood. He'd keep trying to reach you long after everyone else starts losing patience. Even if you slam doors in his face or tell him you hate him, he'd continue believing the real you is still in there somewhere.

Rohan 

Rohan would be fascinated. Concerned, yes. But also fascinated. The transformation is so dramatic that it immediately captures his attention. One week you're a beloved little kid with a Stand that spreads joy, and the next you're acting like an actual movie villain. The contrast alone is enough to activate every creative instinct in his body. He'd start observing you obsessively, documenting behavioral changes and analyzing every interaction. 

Of course, the second he realizes you're genuinely suffering or potentially under some kind of influence, his attitude becomes more serious. What would really unsettle him is how intelligent your cruelty becomes. Children are usually impulsive when they're mean. You're suddenly strategic about it. Calculated. Almost adult. Rohan would absolutely suspect a Stand effect, possession, or something equally bizarre before he'd believe this was your natural personality.

Yukako 

Yukako would initially assume someone is bullying you. She sees an angry child and immediately starts looking for a target. Who upset you? Who hurt your feelings? Who made you cry? Unfortunately, she quickly discovers that nobody did anything. You're just... mean now. Horrifyingly mean. Yukako would actually be one of the few people capable of matching your attitude. If you start insulting people, she'll fire right back. If you throw tantrums, she'll stare you down until you stop. 

Yet underneath all of that, she'd be worried sick. She knows emotional instability when she sees it. The fact that your personality shifted so dramatically would convince her that something is seriously wrong. She'd become fiercely protective while simultaneously refusing to tolerate your behavior. It's a very strange combination.

Tonio 

Tonio would immediately assume it's a health issue.The first thing he does is feed you. The second thing he does is feed you more. The third thing he does is become deeply confused because it's not working. Normally, Tonio can solve all kinds of bizarre problems through food. Stress, exhaustion, tension, minor illnesses, he's practically magical. Yet no matter what he cooks, you remain a tiny demon. The realization genuinely worries him. 

He'd start paying close attention to your eating habits, sleep schedule, and overall health, searching for an explanation. What hurts him most is that you're suddenly rude about his cooking. This is a man whose entire identity revolves around feeding people. Watching you criticize dishes you used to love would feel like a personal attack. Still, he'd never stop trying to help. Every meal becomes another attempt to bring back the happy child he remembers.

Reimi 

Reimi would be terrified. Not of you. For you. Her first thought would be that something has happened to a child she cares about. Reimi has spent a lot of time with children in her life. She also knows better than most people that sudden personality changes can be signs of something supernatural. 

She'd become incredibly gentle around you, even when you're being cruel. Every nasty comment would just make her more worried. The saddest part is that she'd continue treating you with kindness no matter what. Even when you're trying your hardest to push people away, Reimi would keep reminding you that you're loved.

Shigechi

Shigechi would cry. Immediately. The first time you call him something mean, he's devastated. This is a kid who gets his feelings hurt pretty easily under normal circumstances. Suddenly you're targeting him with genuinely malicious insults? Poor guy doesn't stand a chance. At first he'd avoid you entirely because he doesn't understand what's happening. Yet because he's a child too, he'd eventually work up the courage to approach you again. 

Shigechi would keep hoping you'll go back to normal. He misses the version of you that laughed at his jokes and made everyone feel happy. Even when you're being awful, he can't completely stop caring about you.

Mikitaka 

Mikitaka would be absolutely baffled. Human behavior already confuses him enough. This situation is incomprehensible. One day you're friendly. The next day you're threatening people while staring at them with unsettling intensity. He'd spend weeks trying to figure out whether this is normal human development. The answer, unfortunately, is no. Mikitaka would approach the problem with complete sincerity, asking increasingly bizarre questions. "Have you recently undergone a transformation?" "Is this part of your species' maturation cycle?" "Are you being controlled by a parasitic organism?" The fact that some of his theories aren't actually impossible in Morioh only makes things worse.