Project ARMS Vol 2

From the VIZ Media edition

When Ryo and Hayato find out that the third ARMs kid is Takashi Tomoe, the new transfer student at their school, the mysterious Egrigori organization deploys precocious twins, Jeff and Al Bowen, to go after them. To Jeff and Al, it's all fun and games, especially when someone gets hurt. The only way the ARMs kids are going to survive is by working together - but Hayato's a hot-headed lone wolf and Takashi just wants to run away and hide. Do they even have a chance of surviving?

Source: Anime News Network Encyclopedia