Garrett puts on his glasses and pulls out his miniature notebook, taking a deep breath.
"Kooji... I did some research into your false Rinnegan. Apparently, because of your eye structure and chakra flow... The false Rinnegan amplifies your Sharingan's Jutsu... Basically, even if you don't have your false Rinnegan active, it's effects "bleed over", in a sense, to your Sharingan.
When I was observing you and Kallen while you were both under the genjutsu, my Byakugan noticed that Kallen's chakra points that were centered in her brain/ head area were... Irregular. As if... They were closing, getting sealed. We know that genjutsu merely disrupts chakra; I've never seen a genjutsu of your caliber before.
My theory is this... Because of your circumstance and ability, it was because of this that Kallen suffered her symptoms today... Her inner balance is thrown off... And that's an understatement."
Garrett looks at Kooji with a dead serious look. He speaks concisely and emphasizes the importance of his words.
"Kooji, you must listen to me. If you keep doing you're doing with Kallen, I've hypothesized that her Chakra points will get sealed... Effects can range from memory loss, a permanent state of genjutsu... Or at the worst, death."
"You cannot do this anymore... Please, you have to understand. Kallen has some damage that isn't irreversible, but you must give me time to research a proper treatment..."