Takumi-senseiI'm... I'm gonna kill him...!Takumi-chan!Takumi-chan's so cuteTakumin's so cute! Takumin!Cute! Cute!Cute! Cute!Barun barun shiyoru! Based on the Nico wiki article here, this is a saying normally associated with Shijou Takane's breasts. It's a derivative of "burun burun shiyoru" (ぶるんぶるんしよる). According to the Nico wiki here, "burun burun shiyoru" was a phrase that was originally used by the uploader of the Hagiwara Yukiho video here. Takumi-chan's so cuteWhen this recording is over, I'm going to bend every joint in his body the wrong way and kill him...!!Please be quiet!
(Staff)*cheering from backstage*Takumi-sensei's so cute!