Ibuki, 5 months pregnant: "Sensei! Look, look! My belly's gotten so big! It's a boy, so I hope he grows up strong and cool, just like you, Sensei!"
Sensei: "...Yeah..."
Sensei (thinking): (Yuuka: "Ibuki-chan is pregnant!? …This can't be!! Sensei, did you take advantage of Ibuki-chan!? That's so low. Stay away from me, you're disgusting." Noa: "…I'm sorry, Sensei. I'll be leaving early today. I'll finish the rest tomorrow… Excuse me." Momoi: "Midori!!! Midori!!! Don’t do anything rash!!! We don't even know if it's true yet!!!" Aris: "If a baby has been conceived, it means we have a new comrade." Momoi: "Aris, shut up!!!")
Sensei: "Ibuki, come over here."
Ibuki: "What is it, Sensei?"
Sensei: "…" (sound of something clicking)
Ibuki: "Is that... forceps? Did you borrow it from the Remedial Knights?"
Sensei: "I'm sorry." (sound of something piercing)
Ibuki: "Ah!!! It hurts!! Sensei!? Sensei!? What's going on?"
Sensei: "You can't be allowed to give birth."
Ibuki: "Blehh (sound of vomiting)... Sensei… Please, stop."
Sensei: "…Here it is." (pulls out the fetus's leg)
Ibuki: "Sensei… hic… What is that?"
Sensei: "It's… part of the baby."
Ibuki: "Hic… hic… Uwaaahhhh!"
Ibuki: "It hurts!! It hurts!! Please, stop!!!"
Sensei: "I'm sorry… I'm so sorry… (sound of removing the remaining parts)"
━━━━━━━━━Several minutes later…
Ibuki stares blankly at the ceiling.
Sensei: "I'm sorry… The Medical Emergency Club is on their way."
Ibuki: "Sensei's… baby… My baby… hic… I wanted to play together. I wanted to go to the park. I even wanted to teach them how to draw… hic… I wanted to show them to Makoto-senpai, and Iroha-senpai… My precious, precious… Ibuki's… sniff… baby."
Sensei: "…It seems like the Medical Emergency Club has arrived. Ibuki, stay calm. I'll explain the situation to Sena."
Sena: "Sensei! What happened? I heard Ibuki-san was injured and rushed over."
Sensei: "Oh, Ibuki stepped on a landmine at the park. As you can see, her internal organs are damaged. She needs immediate treatment."
Turns out that actually is the French flag she's holding, but it appears to be the version that's hung at the Arc de Triomphe, which has lateral stripes instead of vertical.
I think I have the same concept of Roll's leg proportions as this artist. I visualize her legs as being more natural in shape under the boots, rather than filling the entire space inside them.