Amusingly, that looks a lot like a Duel Disk from Yu-Gi-Oh!, doesn't it?
Ah!?Come, let's begin.Hey, Sendai.It's all set then!!Sendaiiiiiiii.What is it, Poplan-san?Why don't we have an "adult night battle" tonight?That nightThat one!?Bring it on.I thought she understood me!!Oh, sounds good♡