Angelo shook his head as the teachers then made an announcement "you not be given le way with any instructor each one will drill you until you meet their standards no exceptions. Even if you couldn't do them before what we are about to do to you now will make that change, as jinjurikies you all have immense charka stored inside your bodies with the help of the taijustsu master-"

My name is kagura hiraki (just made up the name) and what I will do is condition all of your bodies into hardened steel so that you wont feel so much pain when your using the tailed beast chakra when im done with you babies you will be able to handle a shiriken to the chest and still be fighting!" she said with an almost evil laugh 

The ninjustsu master sighed softly and continued "well that's what shes going to try to do anyway, it will simply help you bodies handle using the chakra later on. For now though you must all go to the finjustsu master so he may put a special seal on your bodies for your training." Then the finjustsu master grinned widely 
"ah perfection I get to work on their seals now, so who is first?" He asked with an accent that Angelo couldn't understand but Angelo decided to make himself noticed and he walked over to the master and lifted up his shirt to show his seal which contained 3 distinct dots above it marking him as the 3 tails jinjurikie "ah a good seal now then" He said as he got his fingers to glow with chakra before he pushed his fingers into his gut and turned clockwise then counterclockwise before he expelled a large amount of chakra covering Angelo body in an instant before he pulled his hand away then within seconds Angelo groaned loudly having a hard time even standing up straight straining to simply keep from falling on his face.

The ninjustsu instructor explained "what Mario sensei did was put a new seal on Angelo, think of it as a weight seal constantly making Angelo's body heavier and heavier. This is a quick way of gaining muscle mass since your biju will repair your bodies constantly their is little risk involved. Everyone must get these seals before they start their training since this will half your training times"