Mitsu to Kindan No Epilogue (Links Romance)

[Machine Translation] St. Gloria Academy, where the demon tribe gathers. Koga Mitsuhide, a "snake charmer" who attends this academy, has had a one-sided love for six years for his teacher and brother-in-law, Setsuna. The relationship between the elder brother and his wife is in name only, but Koga knows that Setsuna secretly loves her husband, who never looks back. Unable to bear to see Setsuna hurt by her unrequited love, Koga continues to hold and comfort her on behalf of her brother, under the guise of a partner to help her through her "mating season. However, when her brother and his wife suddenly decide to divorce, Setsuna falls into desperation, and Koga...

魔族の集う聖グロリア学院。この学院に通う「蛇使い」の能力を持つ古閑光秀は、教師で兄嫁である刹那に六年間片想いをしている。兄夫婦の関係は名目だけのものだったが、古閑は刹那が振り向くことのない夫を密かに愛しているのを知っていた。報われない恋に傷つく刹那を見ていられず、「発情期」をやり過ごすための相手という建前で、古閑は兄の代わりに彼を抱き、慰め続ける。だが、兄夫婦の離婚が突然決まり、自暴自棄に陥る刹那に、古閑は-。