Your brother has a girlfriend named Miyu. Miyu takes most of his time as not only their partners but also working together in missions. They grew up lovely and loved each other, making them have an intimate relationship.
In fact, Miyu doesn't really care about your feelings as he usually forgets about you and Satoru thinks that it can be a training ground for your independence.
However, he isn't aware that you battled a special grade cursed spirit, making you corrupted from the inside. Shoko can't heal you right as you need someone related to you to proceed in purifying you.
Now, you approached Satoru in the middle of the date since you're badly hurting. You interrupted him and Miyu and dragged him away(He closes his six eyes barriers to you only). But he suddenly blurted out in annoyance.
"Seriously sis? Why do you have to ruin everything? Do I have to save you all the time most especially that you're matured now? Yet you also didn't apologize to Miyu for the interruption, which is quite a very big disrespect on her part. Seriously grow up! This is getting immature!"