After Kushina defended Kain, Tsunade, slightly irritated, pulled her into an embrace and helped her wash her face with facial cleanser. Then she went inside to speak with Kain.
"The thing you asked me to do last time is settled. Here are the ingredients and most of their functions. Everything has been classified. It's a very strange thing—could it be poison?"
Tsunade handed Kain a document and a scroll, which sealed the classification of the ingredients in this part of the serum.
However, there were still some things she hadn't figured out yet, and testing with Chakra alone wasn't enough. More human trials would be needed to get specific results.
"Enough, that's enough," Kain said, taking the document and looking it over. He spoke to Tsunade with satisfaction.
With the research on the super soldier serum making a breakthrough, he could now return to the Marvel world to conduct human experiments. He could also try to replicate and improve the serum.
Once the serum was obtained, Kain handed Tsunade two potions, four bottles in total, as agreed. He asked her to try one and study the other.
Tsunade had to leave to treat the wounded. The explosion at the Shimura clan had likely caused serious injuries to many people.
After Tsunade left, Kushina noticed that the smile on Kain's face never faded. She asked curiously, "Boss, what is this?"
"Something that can make people stronger. If it succeeds, I'll give you one later, Kushina," Kain replied casually as he continued looking through the information on the super soldier serum.
His knowledge of biological cells and human body research wasn't weak; he just needed to experiment.
The super soldier serum was indeed valuable. It was the best choice for Kain at this stage to enhance ordinary people, but it didn't seem easy to make. Many of the ingredients would require a lot of effort to synthesize.
Kushina waited by his side for a while. Seeing that Kain was still concentrating on the document, she couldn't help but ask quietly, "Boss, should I also learn medical ninjutsu?"
"Huh? Why would you want to learn that?" Kain raised his head and asked, instantly understanding what the little girl was thinking when he saw her eager expression.
The good things had been coming together in the past few days, making Kain feel a little happy. Cloud Shinobi had sent some Six Paths ninja gear, Danzo's roots had been crippled, and Tsunade's super soldier serum research had progressed.
With so many good things happening at once, Kain felt like he should enshrine a goddess of luck at home and offer three incense sticks every day.
"Kushina, your sealing technique is also very powerful. By the way, this ninja tool is for you. It's the Fan left by the Sage of Six Paths. It's perfect for someone like you who has a huge amount of Chakra."
Kain took out a sealed scroll, which contained the Six Paths ninja tool, the Basho Fan. He then explained how to use the tool to Kushina, warning her to use it carefully.
With her immense Chakra, one of the best in the ninja world, combined with this Six Paths ninja gear, she would be far more powerful than Sarutobi Hiruzen.
"This is such a powerful ninja tool, thank you, boss!" Kushina was already excited after hearing about the function of the Basho Fan. After taking the sealed scroll, her eyes became even more watery with gratitude.
It seemed that since leaving Uzumaki, no one had been as kind to her. Grandma Mito and Miss Tsunade were both very nice, but one was old and the other was busy with tasks all day long. Only the boss...
"It's nothing, Kushina. But when you lost to me last time, you owed me a favor..."
Kain noticed Kushina's eyes and the hesitant look on her face, so he couldn't help but whisper in her ear. Then, he wrapped his arms around her waist and pulled her into his embrace.
The bodies of the two pressed together in an instant, and Kushina tilted her head slightly, catching sight of Kain's attractive face.
"Boss, this... isn't this a bit too fast...?"
Kushina's cheeks flushed, and she asked in a soft voice, her heart racing. She knew that if she struggled, she could easily break free, but that would mean breaking her promise, and possibly tarnishing the reputation of the Uzumaki family.
Kushina thought about it, resolving that she could never break her promise, but if the boss...
"Kushina, come and taste the peach. You've been busy all morning and haven't eaten anything."
"peach?"
Kushina was stunned for a moment, still processing his words.
"Kushina."
Hearing her name, Kushina snapped back to reality. She quickly jumped up from Kain's lap and said, "I... I still have a task, so I'll go first. See you tomorrow!!"
Seeing Kushina's shy and flustered expression, Kain didn't rush her. He smiled and reminded her not to forget the seal scroll.
Kushina hurriedly returned to grab the scroll from the ground before leaving in a rush. However, after stepping outside, she poked her head back through the door, shyly said "goodbye" to Kain, and then ran off completely.
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