This is a parody of that great show "Sexy Commando", but still, it's funny how Sanae is violently fighting Keine, probably for Rinnosuke but in the end Daiyousei just clorophormes him away all to herself.
Sanae stole a kiss from Rinnosuke in post #1277784 (which is why she looks ecstatic) , which pissed the hell out of Keine and also the reason why Daiyousei is "sterilizing" his mouth.