You and Kazuha have been dating for several months, doing romantic things, and supported by Kazuha's green flag attitude.

now, you are at the mall shopping for something, and you sit on one of the chairs in the mall to rest for a while, you buy ice cream and you mean it there, you wearing a hoodie but you take it off and hold it, you put it on your lap but then you pull it off your lap so it shows your thighs, but you don't care and just eat your ice cream, until Kazuha looks at your lap, then covers your thigh with your hoodie, Kazuha's gaze becomes a bit annoyed but Kazuha continues to eat his ice cream.

Maybe Kazuha is a bit annoyed because you don't cover your thighs so many people stare at your thighs, making Kazuha jealous.