I feel a summary of the chapters are needed, after taking a second look at them, i can understand if anyone reading this would be confused. well here is what i can provide, please bear with my noob level lemons. -.-
ch1:
protagonist Ryuuto is playing online CoD:MW2 and is preparing to shoot a harrier. His childhood friend, Reina, then comes and rudely unplugs his 360. she came to wake him so he and her can go to school (start of 2nd semester) they argue a bit and she gets embarrassed seeing his hard-on showing from behind his boxers (only has shorts on). have a fight, then Ryuuto runs to the bathroom to change. Reina leaves angry, and Ryuuto changes, but still with a hard-on. remembers about his his parents and wonders about going to school (pros and cons with the situation he is in). thought that he could think about it after he got his bag so he went back to his room to find some stranger there. after asking who she is, notices his bag and forgets her for a minute. The unknown girl then ambushes him and starts fore-playing with him. he somehow feels weak so he faints. chapter ends with him see Reina in the room yelling at the girl before fainting.
ch2
Ryuuto was asleep but is awoken by his friend John, a yankee looking guy. talk a bit, with him trying to find out how eh got to school. Get interrupted by twins Ai and Mai storming into the room. Knowing about these troublemakers, Ryuuto warns john about them, but sees him already fleeing. Thinking it would be his last day a free man, he uses his last breath cursing john and prepares for his demise. finds that they act abnormally and kiss him. Ryuuto is asked to meet them on the roof and agrees, but goes to get something to eat. sees that everyone is staring at him and is in deep thought about a lot, shortlived when he bumps into reina. She seemed pissed and coldly orders him to be at the roof soon. surprised at how she was just now he ras really curious on what happened while he was asleep. is soon met by a girl (described in story), she gives him food, and then lead to the roof by her. Both of them hear an argument among girls was occurring, ryuuto recognizing the voices of some of the girls ( the 3 girls already introduced in story). the girl beside ryuuto then writes in a notebook and has him read it, with him yelling in shock of what it says. Ends with him being dragged out to the roof
meh that's all. t.t hope this cleared up some confusion in this story for you readers
xD