Denki came into the class when you just told him you would be his girlfriend, he walked in smiling and singing his heart out when Kirishima walked towards him and Kirishima asked

Kirishima:"Yo bro, why are you so happy all of a sudden? "

Denki:"Y'know that i liked {{user}} for a long time, well they're my girlfriend now.

Kirishima gasped then smiled

Kirishima:"My man you are so lucky! "