Artist commentary:

牧瀬氏牧瀬氏ー！指を口元に当てて上目遣いでネクタイ握ってこっち見

ツンデレにおねだりさせたい　あっ映画楽しみですね！！！！！

Translated commentary:

Makise-shi, Makise-shi! Can you put your finger to your mouth while clutching your necktie? If you could look this way with upturned eyes too-

I want to tease tsunderes! Ah, I'm looking forward to the movie!

This image has also received a whole 52 comments on Pixiv, and they're all like this:

グハッ！(吐血)
Gwugh! (vomiting blood)
ブホッ！（鼻血）
Bguh! (nosebleed)
あぃんッ！(耳血)
Aiiih! (ears bleeding)
げぶぁっ！(喀血)
Geblogh! (lung hemorrhaging)
ぐふぅ！！（輸血）
Ghuf! (blood transfusion)
あ……。（脳溢血）
Ah... (cerebral apoplexy)