To make Tanaka focus on her anterior back so he will become addicted to it or something along that line. That's my guess.Seriously, what is her motive here ?
To get him to look at her tits closely, and see if anything bounces.Seriously, what is her motive here ?
No one, abolutaly no one at all.
Ueno: Set up a complicated plan and make up a new invention to set her up on fire on the most brutal self burn know to man. instead of... like... making a device to change her size or something