Is because neo from the future saw a file on some future bad guy's something that he wasn't supposed to look at yet until he was old enough to discover telling him that in order for them to be safe from his target list is for him and her to break this up and not talk to each other no matter how much it hurts because david knows in his heart that they will return in his life later on when he's a bit more matured tony says he will be with him until the end but will not accept the breaking up with steffy crap cause that's another excuse she is strong on her own she just needs to be train david stands up with rynx hopping on his shoulder also speaking to tony saying that he didn't read the files on those two only neo did and he did this for there we'll being and cause he cares about them so he shouldn't question neo motives unless he understands what they went thru in the future david leaves his brother alone in the kitchen room telling him to understand this hard decision he is making and to have a good night rest for school before he falls asleep in class tommorow morning tony laughs at this saying he is the main one who falls asleep in 1st period class and wakes up late.
Not knowing what class period he has to go next david doesn't say nothing just smiles saying he miss this brother bonding moment as they go there separated ways going to there own room and falling asleep he tell rynx that he made him a personal bed next to him with a pillow and blanket so he won't be cold rynx thanks him again for his hospitality and being part of his circle as david closes his eye's all he can think about is breaking the bad news to steffy in person than in text message tomorrow as rynx see him he tells him that he will get her back someday he just has to believed in each other love as he completely falls asleep alongside his buddy rynx he forgets about everything feeling much more better after talking so as time passes by making it early in the morning the alarm clock rings out loud waking up rynx who was actually enjoying his nap but david is still sleeping like a log but that doesn't stop his buddy from getting on top of his face and begin to scratch him furiously until he wakes up but nothing is still happening he just touches his face and turns around to the other side of the bed ignoring him rynx begins to laugh maniacally.
Telling him he better get up or he will suffer the most dangerous consequence he has ever received in his life as rynx tries different methods to wake up his master he come out with no good results he tries to see if his heart is still good or at least beating rynx put his ear in his chest area hearing if there anything wrong with him his eye's open wide from shock he leave his room and find his brother tony room looking around he finally finds it knocking on the door hard until he open it as the door opens he ask rynx what does he want rynx says that his brother david is not okay he is in his room right now breathing hard and sweating alot tony runs out his room picking up rynx telling him what else is happening to him than what he just mentioned rynx say that his heart beating slowed down little by little until he went to pick him up tony enters his brother room picking him up from his sweat cover bed on his shoulder taking him to the clinic room asking neo to call there grandpa and tell him to meet them their right now as neo does that he ask tony what does david need when he arrives in the room tony respond a full body scan on everything nothing left hidden as they all make it to the room.
He put david on the bed letting neo scan his body and make sure he doesn't suffer an attack as neo finishes scanning him completely he gives a worry look on his face telling them that david is in very serious condition that might put in death bed if they don't heal or find a cure for him soon in the 24 hrs tony and rynx expression turn to a worry and sad one asking what they can do to saved him from dying neo start to explain that the only way to save him is by either finding a rare plant that grows strong healing beans or a powerful witch who is very knowledgeable about her spell and who isn't evil yango arrives in the room breathing hard telling his grandsons that he knows what is wrong with him but he will slowly start to suffer from the inside by the passing hour's tony ask what could be causing him to suffer this much rynx looks at yango telling everyone that the only way he was able to fight even with a full power oni was for him to used 100% of the aztlan force form power and he was able to hold onto the power for more than 30 minutes but he wasn't worry about the consequence at the time in the battle he was only focus on winning and not loosing yango slams his fist hard against the wall.
Leaving a hole in it saying his grandson is so brave and stupid at the same time for fighting pass the his own limit but he has to realize that his luck and strong will wouldn't have protected him from suffering he would've suffer in a later time from overusing the form itself rynx says he his buddy knew the consequence from extending the used of the form but he had a world to protect and save yango ask wasn't his future david there too when they fought oni rynx says yeah he was but he got caught off guard by neo getting overtaken by the bad a.i oni itself and he got struck in the right side of the abdomen by a laser blast trying to protect his younger self so he took the all the power of his future self and fought oni for hour's since he had a whole satellite with weapon and part to repaired himself in the middle of the battle yango looks around the room trying to find the book with the only known location of the bean plant that can produce little miracles they are called senzu beans but they are very rare to find since there's an old farmer who keeps the plant farm hidden from anyone who might want to sell them to the highest bidder and get rich of it.