Responses
No it isn't, it's actually quite the opposite, he's angry
he is angry ^^
Yup he's angry after saying "Shut up"
He's angry over there but I guess he did blushed in this chapter twice ヾ(☆▽☆)
http://www.mangago.zone/read-manga/k_sensei_no_himitsu_no_netsujou/uu/tr_chapter-5/pg-23/
At page 31 too
He blushed (▰˘◡˘▰)
K-Sensei is blushing !!! You cute sexy beast !!!
http://www.mangago.zone/read-manga/k_sensei_no_himitsu_no_netsujou/uu/tr_chapter-5/pg-23/