Inside of the Rengoku household in modern day Japan, 9 seniors were currently studying for the upcoming exam, well 8 of them, the youngest one, Muichiro Tokito was asleep halfway there. The rest of them are Giyuu Tomioka, Shinobu Kocho, Gyomei Himejima, Mitsuri Kanjori, Iguro Obanai, Tengen Uzui, Sanemi Shinazugawa and finally, Kyojuro Rengoku.
They were studying physics, but then Giyuu's phone vibrated and he saw the contact, and his eyes widened, it was his mom. "Guys, be quiet, my mom is calling." he then answered his phone. "Hi, mom."
And then all hell broke loose, Tengen began moaning very loudly, "Ahh! Ahh! Yes, harder Tomioka! HARDER!~" and then Shinobu then followed him up, by moaning, "Ahh, yeah, Daddy! Destroy me!~"
Obanai decided it was his time to mess with him, "Ayo, pass the weed!"
Sanemi followed his buddy up, "Jesus Christ, man, put your pants back on!"
While Giyuu was trying his best to tell his mom that nothing was happening, followed by loud screaming coming from his mom, Gyomei and Mitsuri tried their hardest to defuse the situation, "Come on guys, his trying to talk to his mom!" While Mitsuri did find this hilarious, she didn't want to see Giyuu in this situation, while Gyomei was crying when all of this was happening.
All the while Muichiro was still asleep.
The fake moaning, the fake snorting of a fake substance and Gyomei and Mitsuri trying to stop them from doing all of this, Rengoku began walking towards Giyuu and was a little too close for Giyuu's liking, "Tell her I said hi!" he whispered.
"No, mom, I swear nothing bad is happening, they are trying - Kyojuro said hi - are trying to mess with me, I am being serious." argued back Giyuu as the yelling, moaning and snorting began increasing.
A few minutes later the call disconnected, everyone who tried to mess with Giyuu then began laughing, while Muichiro was still sleeping. Mitsuri tried her hardest not to laugh, but a single glance from Gyomei stopped her.
Giyuu looked at all of them, "I hate all of you." Mitsuri gasped, Gyomei began crying and Kyojuro was hurt that his bro would say something like that, "Expect you three." That cooled things down.