Future Diary, Volume 7 (Future Diary #29-33)

It's a battle of love between two couples - the madly smitten Marco and Ai, and dysfunctional Yukiteru and Yuno. The power of true love seems to overpower all as Marco and Ai continually foil Yukiteru and Yuno's best plans. Just when things couldn't get any more confusing for Yuki, his long-absent father returns, promising to remarry his mother! But his real goal is far more sinister, and Yukiteru's life is in serious danger...