Responses
It's the same couple. Their names are Amano Zen and Hanyuu Saiji. It's just that in TwAM, they were calling each other their surnames. But since they're a lot closer now in this one, they started addressing each other with their first names.

Is it a spin-off of Tsuzuki wa Asa Made where Amano (dorm leader) and Hanyuu (vice dorm leader) staring? Because the name of the dorm match and the characters similar with one on that manga (only, the name is different.. in this series the name of dorm leader is Zen and vice dorm leader is Saiji. Is it because it is indeed a different series or because previous trans or current trans of TwAM is wrong? or is it their family and given name? what what what).
Can someone tell me? I read TwAM first before this one and the similarity confuses me so much. It would be pretty exciting if this story is a spin-off of TwAM! XD
Thank you in advance guys!