Ten days pass like that, Xin train everyone like no tomorrow, he even add time manipulating ability to the barrier to slow the time outside.
All the things that happen to them are seen by Venelana, she doesn't even know if this is a training camp or a punishment for Rias and her peerage.
Xin who calmly stans far looking at them, he grabs a handful of little pebbles and starts to flip to the guys who bussy attacking their opponent.
Kiba who is about to slash the golem suddenly dodge to the right and slash randomly in the air.
Ding!
Ding!
Ding!
Ding!
He slashes all the pebbles that Xin throws at him and continues to chase his enemy.
Issei rolls in the ground, jumps backward like a cat and blocks the other pebble using his sacred gear.
But still, he was hit two time in the shoulder and stomach. He angrily shouted," Damn you demon! Can you even use moderate strength when you throw a pebble! It hurts a lot!!"
Xin takes another bunch of pebbles and flips it to him, Issei scrambles to run while cursing Xin for being shameless.
On the other side Koneko who, like a destroying machine, actually destroys all of his super defense golems that he builds tougher than other golems.
Xin flip some pebbles to see if her dodging ability is improved, and the result, Koneko dodge some of them while he smashed seen with her 'Touki'.
Koneko can now use 'Touki' on her whole body but it was still thin like paper and easy to destroy.
But still this ability tremendously increases in their offense, defense, and speed, as Xin can see, Koneko 'Touki' can enhance her overall ability to 50% and that's a lot for him.
And for Rias and Akeno who already grasp the timing and the right demonic energy consumption, the golem did not possess any threat for them.
They actually destroy Xin's hard work using a coin size destructive ball and electric ball.
After this training Kiba and Issei gain a sense like Haki but still at a minor level dodging the attack that hardly is easy but not much.
Koneko's overall ability improves, her demonic power enhances much like Kiba who is a knight.
Rias, and Akeno demonic power purified and their body capacity improved a lot, and it did not include the magic management and magic control that they learn in the training.
While Asia who becomes a full-time doctor of them, she can already heal major wounds like fracture internal bleeding in a minute.
Xin look at the destruction that they did in the park and to his golem, he reluctant to said," They fine now, I think they are already ready"
Venelana who beside him nodded, she thought that they were ready in a manner that they could train too much.
Xin shouted," Okay stop, let's end this training! Don't destroy any part of the park"
Rias and her peerage stop, they reluctantly walk back and sit on the bench, they are tired but it's not much like the first day.
Xin helpless sigh, he steps out and use his new ability to the park.
'Time Reversal'
Like a video player that just rewinds, the whole park starts to go back to its original condition after a few minutes.
Venelana still amaze to the ability of Xin, she know that it's hard to use Time and Space manipulation and the only one who can use it is one of the Great Five Mao
Xin then walk back and said," The rating game tomorrow will going to be easy for you guys, but defeating the red chicken is hard"
"As the other already know, that chicken is immortal but it's not, he just has the ability to regenerate faster and control fire"
"I will not going to tell you how you going to defeat him, you just need to think your own plan for that, i will not let Melan participate while i will observe you guys"
Rias asked," But i only have 3 peerages if you let Melan and you sit in"
"Don't worry, I will let Issei and Asia join your group later," Xin said.
Issei hurry said," No i don't want to join, i want to rest tomorrow"
Xin sadly said," Well, sadly for you, if Rias-senpai loss tomorrow, Melan will going to become servant by a pervert playboy"
"What!!" Issei was shocked, he hurried and said," Then let me join and beat them!"
"But you can't join if you don't have any devil pieces on your body," Rias said.
Xin smile and said," Don't worry, I already ready a solution for that"
He then takes out 4 red color chest pieces, seeing that Rias asked," Is this the devil piece that you borrowed yesterday?"
Yes," Xin show it to them," I slightly modified this chest piece, this piece will not reincarnate any of us to a devil but the other function is still there"
"And the most important is that this devil piece has a timer, this devil piece will going to eject from our body after 3 days"
Xin then give it back to Rias," Use it to us, use the Rook to Melan, Bishop to Asia, Pawn to Me and Issei"
"Why only Pawn at you and him? You two are so powerful that this devil piece cant resist all the power on your body, much more you Xin-kun" Rias said.
"Don't worry, I slightly modified that pawn so it's fine for me to use it for a couple of days," Xin said.
"Well… if you say so," Rias hesitantly said. She then starts to make them peerage.
Melan, Asia and even Issie successfully become her peerage, but not Xin.
The devil piece that Xin modified was almost destroyed because of Xin's immense magic power and ability, but thank goodness, Xin successfully became her peerage after a couple of tries.
Xin smile at the man said," Okay, this is the end of the training program, let's go back and take a good rest for tomorrow rating game"
"YES!" They yell.