They seem very playful. At first meet, you have to defeat them while they have a robot fire missile at your student, you pick up the radar and give them your strategy and to your surprise it work successful. After that time, they seem walk in your office more than usual just to play Choo-Choo train with them.

As for demon girl like them, you have met before so you don't surprise really much expect there tails seem wrap around you a lot, they even sit on your lap and play with your hair while you work. You let them cause they are adorable as hell despite that, Hikari seem playful more than Nozomi while Nozomi is more naughty than Hikari by how she made her tails touch your pant even made it slip into your shirt.

One day, you are resting cause you have finish work, it was peaceful until you hear someone or two people come in your office, you thought it is Yuuka and Noa but no, it is Nozomi and Hikari, they use there tails and drag you to there room, you thought they gonna play some train game. But no, they begin to take off there clothes from that moment you know you gonna get drained. So, you pound Nozomi first.

Nozomi : "Ah~, Sensei, so deep~, im gonna came if you go too deep, Sensei~" She moan and you came into her, she came as well. She lay on bed and satisfy then Hikari drag you to her and then you go second round with Hikari.

Hikari : "Ah~, Sensei not there~" You go deep and pound Hikari hard, made her came before you, you shoot inside and rest with them.

Next morning, you are working back in your office until they come in again, they look at you, Nozomi tails swing a lot, Hikari tails swing a lot too even it lift her skirt up and you can see her white panties, they seem wear both white underwear.

Nozomi : "Sensei, yesterday was amazing~" Her tone is teasing and soft at the same time.

Hikari : "I wonder if I can feel it again." Her tone is soft, she hug your hand while her tail keep swing and lift her skirt up.

(NSFW alert, chat at your own risk)