Woah, just by being in school I missed one whole riddle!
I think I'll take advantage of Blah's courtesy and post my most awesome...
BRAIN-FRYING RIDDLE #3 
Be excited, brave detectives, for this time it's the ultimate combination of the wickedness of eworm and the awesomeness of our favourite phantom thief! That's right! The third Brain-Frying Riddle is a
Kaitou KID's case!
*click the button* Truly a challenge all the greatest detectives wait for! Prepare to meet your favourite characters once again!
Let me say that again – it is absolutely necessary for you to have read the
previous riddles and the answers to them before even preparing to think about a possibility of trying to solve this riddle. Blame my love for continuity.
It has been two months since the last case.
Kentaro Akito remains in the hospital, his condition getting better and better.
Tsukamoto Keiko has been visiting him frequently and ― that was bound to happen ― they finally decided to start dating. But before that happens, we shall learn some more about Akito's
osananajimi,
Anegasaki Ryouko. Remember this tomboyish girl who's broke almost all the time? Prepare to be surprised by meeting her father,
Anegasaki Yusuke, who's... very rich! What's the reason for Ryouko's trouble with money then? Well, the thing is the two don't like each other a lot. She doesn't agree with her father's obsession with money while he just can't stand her independence and stubbornness.
But now comes the time Ryouko visits him. She does that once every three months but always brings her friends for company. This time too – she brings
Tanaka Shirou and
Yoshimizu Outa with her, as always. As Akito's still in the hospital he couldn't come this time, but Ryouko invites Keiko instead. The visit at Yusuke's mansion starts as usual ― each of the guests get their own room, though they usually spend most of the time together. What Ryouko doesn't know is that her father received a familiar looking notice with even more familiar picture on it.
"Prepare to meet me at the night of the next full moon, for that's when I'll be taking your most precious treasure. ~Kaitou KID"
While Yusuke tries to figure out which of his three most precious jewels – "Sunset Ruby", "Midnight Sapphire" or "Tropical Emerald" - KID is going to steal, his daughter waits impatiently. Shirou seems as excited as she is, while Outa looks indifferent and calm as always. Keiko is in awe of Ryouko's father's mansion though she seems to feel quite uncomfortable here. Being bored out of their skulls they play bridge, hugging version of “spin the bottle” and share short riddles.
The next day inspector Nakamori arrives in the morning. With his big experience he confirms authenticity of the note. Along with Yusuke, Ryouko and the rest, he goes around the mansion. Suddenly they find the second notice from KID on the door of Yusuke's office. It has a red rose attached.
The thief you're eagerly waiting for is already here! Wish him luck! ~Kaitou KID
Everybody's reactions differ. Nakamori says that the note, even though different from the previous one – it has different font, letters size and words' arrangement on the paper – is without a doubt KID's. He wants to pinch everybody's faces, but Ryouko doesn't allow him to touch either her or her friends. Outa starts laughing heartily, which is a totally unexpected reaction coming from him. Keiko seems to be lost in thought, she's been like that the whole day. Shirou doesn't hide his excitement and openly cheers for the thief. This infuriates Yusuke and he start pinching their faces, starting with his own daughter's. No mask comes off but before he does anything else, Outa slaps him in the face, calling him “sick bastard”. Ryouko runs off to her room, seeming to be about to cry. Outa and Shirou follow her, while shocked Yusuke proceeds to the room with the jewels to check on them.
After that Yusuke discovers none of the jewels are missing... yet? Keiko visits Outa's room, but he's not there. She goes to comfort Ryouko and after just a while Outa and Shirou come. Outa wants to say something... and he's holding the red rose KID attached to his second notice...
Want more info, don't you? Here it is – in a new form. Let me introduce to you the
Characters' Hints!
Ryouko: “I hate my dad... Though I'm surprised Outa slapped him like that!”
Shirou: “Hey, Outa, you never cared about KID's cases, right? Have you had a change of mind?”
Keiko: “There's something suspicious about one of us...”
Outa: “I really wish for this bastard's most precious treasure to be stolen!”
Yusuke: “For certain the three jewels are my most precious possessions!”
Nakamori: “KID is a coward – sending his notice so late”.
Kaitou KID: “There's somebody who already knows my identity... but no fear, I have a plan!”
With this you should be able to deduce what is going on in the mansion and why. Who is KID disguised as? What is he going to steal? What's this suspicious thing Keiko mentions? Is she the person who knows about KID's identity or is it someone different? What is Outa going to say right now and what does it have to do with the rose? How is KID going to escape? Your deduction should answer all these questions and more!