When teacher Mr. Iijima called my name, I wasn’t sure how to respond, so I merely greeted him and began my lecture as usual. He probably had some agenda in mind, but I responded with a very standard reaction. I felt so sorry for ruining his plan. Though I am aware that Mr. Ijima usually prepares some surprises to make the lectures special, I didn’t think he would be using Kimetsu no Yaiba [Demon Slayer] as reference for this one. I wondered if I needed to study Kimetsu no Yaiba in preparation for the special next week. Or will it be a different story? I’m afraid I made Iijima-sensei very worried.