Onii-chan dakedo Ai Sae Areba Kankeinai yo ne! (Light Novel)

After being separated for six years, twins Akito and Akiko Himenokouji have joyously reunited and are as close as ever - in fact, maybe a little too close for Akito’s comfort, as his sister has developed an unrestrained brother complex! Though her brother doesn’t take her lustful feelings seriously, Akiko is determined to set the record straight with the other ladies around him, including the three other beauties that live in his dorm and want the boy for themselves. Every morning, noon and night, the girl continues her mission to cross the line with Akito, and she won’t let any girl or sense or morality get in her way - for as long as there’s love, it doesn’t matter if he’s her brother!