Forbidden

Hey, do you know? The lifespan of love is three years. Then how about the lifespan of casual sex? Shall I teach you? When Shizuma, recently dumped by his girlfriend, wakes up next to Minato but claims to not remember a thing about their night together, Minato becomes offended and plans to "seduce and dump" the straight guy. But his revenge doesn't go as smoothly as planned, because it's not just Shizuma who ends up falling... A spin-off of Secret XXX featuring Shouhei's

Highschoolers Yousuke and Shuu have become somewhat estranged due to an accident early in their childhood. However, their relationship is restored when Shuu moves to the shopping district Yousuke resides in, to stay at his grandmother's place. Yousuke, although akward at first, starts feeling stirred by the expressions and mannerisms that the usually aloof Shuu only shows to him

Yoshikawa Haruki has a crush on his Watanabe Ryuusaki, his best friend since high school started.

Haruki is a bit relieved that Ryuusaki is not good with girls, but suddenly a girl seems to have taken interest in him.

Mikage, a graduate student in the Department of Botany, is shy and timid when it comes to love. One day, Mikage decides to become roommates with his financially challenged junior classmen, Nanahoshi. But, suddenly one spring day Mikage is confessed to by Nanahoshi – whose sweet personality differs from his scary appearance. For the first time in his life, Mikage is in a relationship, but he struggles to understand how to become a loving boyfriend.

Smitten Chiaki and tsundere Kazuma are a long-term gay couple. Tomoe, their childhood friend, asks to see them, but when they meet they discover she's hugely pregnant! The father is unknown, and although Chiaki and Kazuma are exasperated with the unconcerned Tomoe, they help her out. Before they know it, the baby is born. The two men are relieved that Tomoe is acting like a proper mother, but one day, Tomoe comes to them with tears in her eyes and says, ''Take care of her for me..