Good points.
You told everything I wanted.
Also note that though kai won't help in breaking it, paralyzing genjutsu is very easy to notice essentially.
*Creates a clone which runs towards you with a kunai*
Now perform the 3 hand seals and extend your chakra to my clone and create an illusion that his body is being swollen up like a balloon obliterating any joint movements.
Since his brain interprets it as if his body is really swelling, it paralyzes the opponent due to lack of movements at joints (the opponent cannot move or make hand seals).
Illusionary Arts: Inflating balloon (Genjutsu: Hidai fuusen)
Type: Supplementary
Rank: B
Range: Short - Mid
Chakra: 20
Damage: N/A
Description: The user after performing the Ram -> Horse -> Rat hand seals will extend their chakra & put the opponent under an illusion in which the opponent will see and feel that his whole body swells up quickly like an inflating balloon, making his body almost like a spherical ball, obliterating any joint movements. As a result, in reality, the opponent will be rendered motionless.
Note:
Can only be used 3 times per battle.
Must be taught by me (-Jiraiya-).