 If you liked
Honey Hunt
|
 ...then you might like
Boku kara Kimi ga Kienai
|
i think the story is somewhat similar. In Honey Hunt the main character thinks she loves Q-ta but the one who is really serious about her is Haruka, his twin brother. In Boku Kara Kimi ga Kienai, she gets saved by the younger brother who she actually thinks is the older, but ends up liking the younger after finding out.