She says, "I am student council president Matsumoto Rise. Nice to meet you." Oh, and I'm science teacher Nishigaki Nana. I'm always looking for new explosion buddies....
What? You're lonely because the second years are away on their school trip? Don't worry, I'll stir up some ruckus for you....
No, I'll make some tea. It's not bad getting a change of pace from my experime---BOOOOM!
doing something sexy 
as soon as we start...
hacer algo sexy tan pronto como empecemos
hacer alguna cochinada en cuanto empecemos
fazer algo sensual 
assim que começarmos...