Title: Tythorphis

Title pronunciation: Ty-thor-fee-is

Summary: Mokuba gets a serious flu that's unknown to scientists. Now it's Seto's job to find the cure before Mokuba's life is no more.

Well, here I am with another Kaiba bros story. I mean seriously, you gotta love 'em XD

I was actually hoping this to be more of a Mokuba-centric but it may be a bit more of a Seto-centric

Anyway, I hope you like this story and I'd be happy if you'd review! ^______^
Enjoy~

Seto was working on his latest project, Holographic Dueling, or something like that, I mean really, that CEO works on so many projects, it's hard to keep up.

Anyway, Mokuba opened the door a little, first to see if it was safe to come in. He got in and said, "Ne Niisama, what are you doing?" Seto didn't looked up, "I'm busy Mokuba." Mokuba tilted his head, "I can see that…um, Niisama, I'm really sorry to bother you with this but…um…I'm not feeling so good…can I--" "Mokuba, just lie down, you'll feel better now will you stop bothering me about these simple little problems you can handle yourself?" Mokuba put his head in shame of being needy, "…Gomen ne Niisama …" Seto didn't even look up.

Few Months later

Seto looked at the clock, 'What the hell is taking him so long!?' Seto sighed frustratingly and walked up to Mokuba's room, "Mokuba what the hell is taking so long!?!?" Mokuba just turned, "N-Niisama, I'm really sorry but…I feel terrible…" Seto didn't seems so angry anymore, instead, he seemed worried.

"Mokuba…" Seto walked over to Mokuba's bed, he gasped, "OH MY GOD!!!!! Mokuba, you look awful!!!" Mokuba coughed, "I'm sorry Niisama…" Seto shushed him, "No, don't talk." Seto was about to feel Mokuba's forehead but his hand got burned before he even touched Mokuba's skin.

"Okay Mokuba, just sleep okay? I'm going to call the doctor." Seto said gently but a small hand grabbed his arm.

"N-no Niisama, don't…t-they'll…th-they'll take me a-away from you…like…how they did-did with…with all-all the oth-other kids…" Mokuba said with great struggle it seemed, Seto eyes were wide open, , "Mokuba, what are you talking about?" Seto said, trying not sound impatient.

Mokuba's eyes closed for moment but then reopened, "T-there are a few…few other kids like me…probably one or-or two…they have-have the…th…the same disease as…uh…me…" Mokuba's grip tightened on Seto as he spoke again, "T-the other kids…were taken…f-from their families when the special doctors…found out they had the-the same disease as me…I'm-I'm the only one left…" "The only one left the special doctors didn't capture?"

Mokuba shook his head or tried to, "…The only one left…the special doctors…didn't…kill…" Seto's pupils shrunk, "WHAT. What do mean 'didn't kill'?" Mokuba laughed sickly, "You-you haven't been watching he-the news have you…? Heh…the doctors were trying to cure the two kids but ended up killing them…Niisama…if you call the doctors…they'll take me away and…kill me." Mokuba had a few tears fall from his blue-gray eyes.

Seto couldn't believe what his brother was telling him, "Mokuba, I promise, you're not going to die."

But little did The Kaiba brothers know that one of the paparazzi were spying them. The paparazzi called someone and told them about Mokuba Kaiba.

Mokuba fell asleep and Seto got out of the room, he wanted to Mokuba to get better but how can he? He doesn't know how serious this disease is or how bad it is and he doesn't know how Mokuba got it but Seto can't help but blame himself for Mokuba's illness.

The doorbell rang and Seto went to get it, "Yes, what do you want?" The woman who knocked on the door sighed, "I don't know why I'm even doing this…can I come in?" Seto glared then nodded, he went into the living room and sat down. The woman did the same.

"Now Mr. Kaiba, someone told me your younger is ill?" she asked, Seto's glare intensified, "How did you find out?" The woman laughed, "Before I start, my name is Cla-ri, and paparazzi told me. Do you honestly think, you, one of the richest people in the world can hide the fact that your brother's sick?" Cla-ri laughed some more, "Listen Mr. Kaiba," her face became serious, "Your brother has a disease unknown to man, if you don't do something about it, he'll die." Seto's glaring stopped, "How do you know?" "When Mokuba was there with you before on TV, my computer tracked something inside of Mokuba, I did more research about it. He seems as if he has a normal flu but it's-it's just so difficult, he doesn't have a normal disease."

"So does that mean I'm going to die?" asked a soft, scared voice. Seto and Cla-ri turned to Mokuba who was on the stairway, "Isn't there anyway to prevent my death?" Seto got off the couch, "Mokuba, you're supposed to be in bed." "B-but it's hard to sleep when people are talking about my soon-to-come death…" "You're not going to die!" Seto tried to reassure.

Cla-ri stood up to and cleared her throat, "I understand you're having one of you brotherly moment but the S.H. will be coming here soon." "The S.H.?" Even Seto didn't know about them.

"The S.H. are the group who are trying to help people who have the same thing as Mokuba." She said. Mokuba then squeaked out, "When are they coming? What do I have to do to make my disease go away." Cla-ri went to the door, "S.H. will be here soon, and you don't have to do anything but Mr. Kaiba here will." Seto nodded, "Since you seem to know so much, what do I have to do about the disease?"

"Tythorphis, that's the name of it." Cla-ri stated, she picked up her phone, "I don't know what you have to do yet, but you'll have to come with us." Seto didn't completely believe what the woman was talking about, "No. I'm not going with some—" "Niisama…she-she can help…" Mokuba looked at Seto with sickly storm-gray eyes. Seto's face softened then sighed, "Fine." Cla-ri smiled, "You listen to everything Mokuba says?" Seto was going to say a mean comeback but was stopped by the roaring sound of horns.

The doctors came and started yelling, "GET OUT OF THE RESIDENT. I REPEAT, GET YOU OF THE RESIDENT."

Cla-ri made a "tch" sound, "Mr. Kaiba, get out of the manor form the back door and follow these directions to go to the District." Seto nodded and carried Mokuba out the back door.

Okay, well, what do you think? Should I continue? Or should I rewrite this? I don't know when I'll update the next chap but I'll try to update soon.