1 Month Later...

In this 1 month of time he went through rigorous training, while improving leaps and bounds, surprising everyone in the Dojo. While Koushiro also started to keep attention towards Kei's progress.

At first week of the month he was unable to complete even a single training schedule, but after another week, things started to take a interesting turn.

Where Kei's body started to adapt to this rigorous training, which greatly surprised himself too, because in his past life , he was just an average guy. So thinking about his current changes made him speechless for the time being.

In the training he also observed his body, which was adapting to the external pressure very quickly, as if his body was specially prepared to be trained and forged into a more better vessel. While he also decided that he will consume the Unknown devil fruit after his training is complete.

After 1 month inside the Dojo.

"Ok, Today's Match will be Kei Vs Nord!" By the way Nord is the strongest person in Isshin Dojo after Master Koushiro.

Kei took his position while adjusting his wooden sword perpendicular to the ground with his two hands. When Kei took this stance for the first time in the fight unconsciously. At that time Kuina's shadow and mine overlapped with eachother, shocking the day lights of Koushiro.

From that day onwards he started to keep track of my development.

"Bow towards the God!, Bow towards your opponent…, Ok take your stance!" said Koushiro while indicating the start of the fight, "START!"

After which I stood at my place while Nord started to run towards me, with intention of going all out. As he knew from all the previous matches, that Kei was not the opponent to be underestimate.

"Pat tat pat tat tat-tat, pat-pat" Sound of swords clashing with great intensity could be heard echoing in the dojo, while everyone was observing serious the intense clash.

While Kei was easily parring and and attacking the opponent making him helpless. After seeing that his opponent was not able to resist him, He decided to end the game in one shot.

Jumping back, Kei distanced himself from Nord.

"Zoof" rushing sound of Kei, creating a friction between air and his clothes.

And rushed with great thrust from the floor towards his opponent, taking him by surprise and getting a clean hit on Nord's shoulder.

"BAM!!!" Everyone's eyes popped out of their socket, with surprise.

"Wowwww!!!" shouted everyone Disciple and Teacher's in Dojo, while looking at Kei with admiring and respect gaze.

"Ok, The Winner is Kei!" said Koushiro with a slight smile. "Ok, then everyone learn from Kei's fight and work harder!" said Koushiro, making Kei as a fuel for improvement for the Dojo students.

"Kei~, follow me!" said Koushiro while bringing Kei in the backyard of the Dojo.

Koushiro stopped and instructed Kei to stand at his position, while he went inside his room and brough two Katana. Throwing one Katana towards Kei, he asked him, "So, what are you going to do in the future?" asked Koushiro, calmly.

"Hmm~, Well Koushiro-Sensei, I will be leaving this Village in the next month, but before that, I want to defeat you!" said Kei while seriously looking at Koushiro-sensei.

"Ok my last question! Why are you in such hurry?" asked Koushiro, with bit of curiosity, as he was already surprised by the incredible growth of Kei, and if he compare him to his Late-Daughter Kuina, He seems to have a Monster talent in Human form.

"Hmm…" Kei thought seriously for a while and said, "Because I want to be the strongest, Strong enough that I can easily sail in this dangerous Sea without any fear!"

Hearing this Koushiro wa surprised for a moment, but still he smiled slightly and said, "Come! Let me see, if you have what it takes to be strongest in this Cruel Sea!" said Koushiro while getting into his serious mode.

Kei took his stance seriously and decided to go all out against his Sensei.

"Silence~ Swish…Tingling ling"

After the bell rang both rushed towards each other with great force and crossed each other.

"Ting…. Kuchak" Sword dug in the ground.

Kei's sword fell in the ground far away from himself, while Koushiro sheathed back his Katana slowly.

"Clack" Sound of Katana being sheathed.

"So, what do you think??" asked Koushiro turning his gaze towards Kei, who was silent for a while. After which Kei woke up from his pose and glanced at Koushiro, with flame of challenge.

"For the time being , No, But I will get it soon!" said Kei.

"Good! Now until the end of the month, if you manage to defeat me, I will let you leave this Dojo without any complaint, But if you failed to do so, then you can't leave it, until you fulfill this challenge!" said Koushiro with a smile.