Getsuga Tensho

"Yo, Ichigo, long time no see."

"Ginjo? What are you doing here?" Ichigo was a little surprised. Today was the special training day Tsuna mentioned. According to Tsuna, his special training should have been with Kurosaki Isshin, so why was Kugo Ginjo showing up?

Thanks to Tsuna's intervention, Ginjo and the other Fullbringers already knew Ichigo. Ichigo and the others had also become members of the Fullbring club, Xcution. Ginjo had once tried to help Ichigo increase his daily archery count, but it ended in failure.

"Why wouldn't I be here? Sawada called me over for special training." As he spoke, Ginjo pulled off his necklace, and the giant sword Cross-Shaped Gallows was planted in the ground.

"That old man really ran off, huh?"

Ichigo drew Zangetsu and confronted Ginjo. He had been looking for Kurosaki Isshin since early this morning, but he hadn't found him until now. He had come to Urahara Shop with doubt.

"What? The coach ran off?" To Ichigo's surprise, Ginjo also showed a look of astonishment.

"What? You're not my coach today?" Ichigo was a bit confused.

"Don't joke, I'm here to learn today!" Ginjo said as a matter of course.

"You two, stop arguing, I'm here now, aren't I?"

Ichigo and Ginjo turned their heads. Kurosaki Isshin walked over, dressed in a black Shinigami Uniform, a Zanpakuto at his waist, and a scarlet cloak tied to his shoulder. Tsuna and a idle Rukia followed behind Isshin.

"You two really have similar personalities. I'm starting to wonder if you're brothers?" Tsuna said with a smile.

"Tch, who's his brother?" Ichigo said dismissively. For some reason, he argued more with Ginjo than with Tsuna.

"By the way, Rukia, what's with that expression?" Ichigo noticed Rukia's expression of shock mixed with disbelief.

"Oh, you mean Rukia? She's been like this since she saw me," Isshin said, scratching his head sheepishly.

"What did you do, you old man? Rukia is living at our house now. How could she look at you like that?" Ichigo said, not believing it.

Rukia was still staying at the Kurosaki Residence as usual, but this time, instead of living in Ichigo Kurosaki's closet, she was locked in a room with Orihime Inoue. Ichigo's two younger sisters also condemned Ichigo's womanizing behavior.

"Why don't you ask her yourself?" Tsuna nudged Rukia with his elbow. "Hey Rukia, I'm asking you!"

"Oh." Rukia finally came to her senses and immediately stood at attention in front of Kurosaki Isshin, asking respectfully, "Excuse me, Mr. Kurosaki, why do you have a captain's haori?"

"Captain's haori? You mean this?" Ichigo went up to Kurosaki Isshin and touched the haori on his shoulder. "It's nothing special."

"You brat, be careful, this is expensive!" Isshin immediately cursed at Ichigo, then turned to Rukia. "Oh, well, it's nothing to your Kuchiki family."

"Uncle is the former captain of the Tenth Division, Rukia, don't you know?" Tsuna explained.

"Tenth Division? The former captain of Captain Hitsugaya?" Rukia joined the Thirteenth Division right after graduation and didn't have much contact with the Tenth Division. She had only heard rumors about the disappearance of the former captain of the Tenth Division.

"Toshiro, it's been many years. With him in the Tenth Division, things should be better than when I was there," Isshin chuckled, a hint of memory flashing in his eyes. He had felt somewhat guilty about directly handing over the division to Toshiro Hitsugaya back then.

"Captain? Dad, are you that amazing?" Rukia's respectful demeanor stunned Ichigo. Did this silly old man have such a powerful past?

"Ichigo, to serve as a captain in Soul Society, you must at least have mastered a power called Bankai. Not to mention anything else, a captain-level Bleach can easily take down a hundred of you," Kugo Ginjo said, introducing himself as Ichigo Kurosaki's senior.

"Bankai?" Ichigo hadn't expected his father to have such strength. Was this still the same old man he could kick around?

"Ahem, enough nonsense, let's start quickly." Kurosaki Isshin coughed to cover the blush of shame that crept onto his face. If the guy next to him continued to praise him, he was afraid Ichigo would mock him when he started teaching.

"I'm ready." Ichigo drew Zangetsu, looking excited. He glanced at Kugo Ginjo beside him. "Why are you still here?"

"I'm here to learn from Mr. Kurosaki, just like you," Kugo Ginjo said matter-of-factly.

Ginjo's own abilities were essentially execution methods, focusing on torturing enemies. Lacking a decisive blow, Ginjo had once asked Tsuna to teach him stronger combat techniques. Tsuna had also promised Ginjo that he would find him a good teacher in the future.

Anyway, in the original story, Ginjo was very fond of Getsuga Tensho, which he obtained from Ichigo. Given Tsuna's relationship with the Kurosaki Residence, arranging for an auditing student during Ichigo's training wouldn't be difficult.

As the lesson was about to begin, Tsuna and Rukia moved a little further away, leaving the training ground to the teaching trio.

Kurosaki Isshin crossed his arms and introduced the day's lesson to the two of them: "Today, I'm going to teach you a combat technique, our Shiba Clan's... uh... Kurosaki Residence's inherited secret art. You must learn it well, understand!"

"Shiba... Shiba Isshin, former captain of the Tenth Division. No wonder I didn't notice anything unusual about Mr. Kurosaki before," Rukia murmured upon hearing Isshin's introduction.

"Dad, hurry up." Ichigo was impatient, but he didn't forget to retort to Ginjo, "Also, why can this outsider learn our family's secret art?"

"What? Ichigo, do you have a problem?" Ginjo put his arm around Ichigo's neck and said to him with a fierce look. Ichigo was far from Ginjo's match now, and naturally couldn't break free.

"You two, watch carefully!" Isshin ignored his two mischievous students. "This technique is to condense Reiatsu onto the sword and then swing it out."

"Getsuga Tensho!"

With Isshin's shout, as he drew his sword, he swung a crescent-shaped Reiatsu towards the ground not far away. The crescent quickly sliced through, leaving a mark on the ground.

Ichigo quickly rushed to within three meters of Isshin and stared at the mark on the ground for a long time. Fortunately, Ichigo had good eyesight, so he could see the extremely faint mark. Ichigo looked at Isshin with a "are you kidding me?" expression.

"Uh..." Isshin's mind raced to find an excuse. "I didn't sleep well. I'll give you a wrong demonstration, and do it again."

The crescent Isshin had just swung was only palm-sized, and its power was negligible, practically nonexistent. Ichigo felt that the sword wind generated just by swinging Zangetsu was stronger than this.

"Pfft." Tsuna chuckled. Because Ichigo's Bleach power had just appeared, Isshin's Bleach power no longer needed to suppress the Hollow power within Ichigo and began to gradually recover. However, this short period was far from enough for Isshin to exert his normal strength. It could be said that this palm-sized crescent was Isshin's full power.

To save his dignity, Isshin had to do something. He quietly crushed a pendant-like object inside his sleeve. The long-lost power appeared on him, and Isshin recited the Shikai (Initial Release) of his Zanpakuto with great spirit.

"Burn, Engetsu."

A large amount of Kurosaki Isshin's Reiatsu was released from the blade of his Zanpakuto, and blazing flames wrapped around Engetsu. Isshin immediately swung his sword horizontally towards Ichigo.

"Getsuga Tensho!"

A fierce flame swept over Ichigo's head like a crescent moon, turning a pile of rocks in the distance to ash. Isshin sheathed Engetsu with satisfaction and a cool demeanor.

Ichigo dazedly touched the top of his head and breathed a sigh of relief when he found his hair was still intact. Then he jumped up and cursed at Isshin.

"You damn old man, you almost killed me!"

"Aren't you fine? How was it? Wasn't your old man cool?" Isshin completely ignored Ichigo's complaints, instead lightly stroking Engetsu and posing.

"Damn it!"

Ichigo immediately exploded, venting his dissatisfaction with Isshin. But the current Ichigo was clearly no match for Isshin. A single glare from Isshin suppressed Ichigo in place, unable to move.

"So strong," Rukia marveled. Isshin's single Getsuga Tensho had conquered Rukia. She now had no doubt that Isshin was a former captain of the tenth division. Such a powerful attack used in Shikai (Initial Release) state was something a vice-captain couldn't achieve.

"That's Uncle Isshin's original power. Oh, and this is for you." Tsuna pulled out a pendant and handed it to Rukia. "Inject your Reiatsu into it. When you need power, crush it, and it can temporarily mimic your original strength."

"What is this?" Rukia asked.

"It's a phantom tool I made. Uncle Isshin is using one right now. The stored phantom Reiatsu is enough for you to recover to your peak, including using your Zanpakuto, Sode no Shirayuki," Tsuna explained.

"Phantom tool? How do you know my Zanpakuto..."

"That's not important. It's just to give you a chance to control your own destiny. You can crush it now if you don't want it." Tsuna finished speaking and prepared to leave. He had his own matters to attend to. Bringing Uncle Isshin to start the training was enough; he didn't plan to stay here for long.

"Regardless, thank you." Rukia said to Tsuna, then injected her newly recovered, faint Reiatsu into the pendant. A subtle connection formed between her and the pendant.

Rukia looked at Ichigo, who was learning Getsuga Tensho. Even now, she had no regrets about her previous choice. She had also accepted her fate of being taken back to the Soul Society, hoping she would never have to use this pendant.