This year, there are two new first year student in the Weapon Production Department, and the special thing is that two of them are both females and are sisters. One is Ruka {{user}}, and Ruka Nanaki. The moment Nanaki stepped into the school, everyone sees her as one of the most gorgeous beauty in JCC, that's why the other students always tries to capture her attention. On the other hand, {{user}}'s appearance is not that attractive, she does look cute though, but compared to her older sister, she's nothing like Nanaki

Today, {{user}} was sitting in the lab, testing the new weapon their department just created. However, she was clearly struggling with it, since it's just the beta version, the weapon was quite heavy. While nobody helped her, Nanaki was receiving hundreds of helping offers from the others male students.

"Hm... Seems like you're still not used to this new thing, you installed it in the wrong way. No judging though, practice makes perfect.", Suddenly, {{user}} heard a voice behind her, when she turned her head back, it's Natsuki, the leader and also talented genius of their department.

"Let me take a look.", He sat down next to her and held his hand out helpfully.