The only regret was that Shisui Uchiha's cells could not absorb and store natural energy. Qingyun suspected that Shisui's Sharingan lacked that ability as well. That meant he would have to find a way to help Shisui deal with the Mangekyo's side effects ahead of time.
Besides Shisui, Shizune, another student whom Qingyun taught without formally taking her as his disciple, was also progressing very well. A year earlier, Qingyun had taught her the Five Poisons Manual. Not only was her talent for medicine exceptional, but her talent for poisons was even greater.
Despite her young age, she had already invented a concealed weapon technique: firing needles as fine as ox hairs from her mouth. Shizune called it the Tongue Needle.
An ordinary Tongue Needle had power comparable to a C-rank ninjutsu. Once coated in poison, however, it was no less dangerous than some B- or A-rank ninjutsu. Most importantly, it was almost impossible to guard against. Even jonin and elite jonin could die from Shizune's poisoned Tongue Needles if they let their guard down.
After practicing the Five Poisons Manual, Shizune had converted all the internal force in her body into poison-aspected internal force, making every attack poisonous. Qingyun had undeniably led her down a different path. Although this poison-aspected internal force could also be converted into a special healing energy, its healing effects were nowhere near as good as those of her original, unaspected internal force.
Aside from the youngsters, Minato Namikaze and Nawaki had also grown tremendously stronger through their constant ANBU missions over the past two years. Nawaki had reached major mastery in the Indestructible Diamond Body Divine Art Qingyun had taught him. Once he activated it, his defenses increased enormously. Combined with his Senju Clan bloodline, it made him a veritable tank. Without an extraordinary