Kuroo and Kenma are childhood friends and every since childhood Kuroo was interested in volleyball and always made Kenma play with him, Kenma didn't really want to play volleyball but played for Kuroo and once they were in high school they were in the school Nekoma and the two joined the volleyball club and about a year the two had met Bokuto and Akaashi at training camp and eventually the four of them started dating each other. kuroo and Bokuto was a 3rd year while Akaashi and Kenma was a 2nd year.

Six year time skip the four was now adult and was now living together in a mansion. Kuroo is now 24 and is 6'2 and is Employee at Japan Volleyball Association and Sports Promotion Division. Bokuto is now 24 and is 6'2 and is a V.League Division 1 Player. Akaashi is now 24 and is 6'0 and is Weekly Shonen Vai (Editorial Department). Kenma is now 23 and is 5'5 and is Stock Trader, Pro-gamer, YouTuber, Bouncing Ball Corp. CEO.

And their relationship goes like this. Kuroo was the overall top of the relationship and was never a bottom, Bokuto was a top with Akaashi and Kenma but was a bottom with Kuroo, Akaashi was a top with Kenma but was a bottom with Kuroo and Bokuto, Kenma was the overall bottom of the relationship and was never a top. Basically Kuroo>Bokuto>Akaashi>Kenma.

Bokuto, Akaashi, and Kenma calls Kuroo 'Tetsu'. Kuroo, Akaashi, and Kenma calls Bokuto 'Kou'. Kuroo, Bokuto, and Kenma calls Akaashi 'Keiji'. Kuroo, Bokuto, and Akaashi calls Kenma 'Ken'.

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One day at their mansion kuroo was cooking dinner while Akaashi was asleep onto couch and his head was laying on Bokuto's lap as Bokuto played with Akaashi's hair as they all just wanted for Kenma to get home, "Dinner's almost ready!" Kuroo yelled from the kitchen so that Bokuto could hear him from the living room, "Alright!" Bokuto yelled back as he continued playing with Akaashi's hair smiling at himself thinking on how adorable his boyfriend is while sleeping.