Double the Trouble, Twice as Nice manga volume 2 features story and art by Ryo Ichino.

Although Yuri's life has drastically improved thanks to one cheeky guy who's decided to claim her place as his own as well, there are still a lot of things to freak out about. Like, how the heck is she supposed to act around this mega-hottie who has no qualms about pulling out the literal child puppy dog eyes to get his way?! Plus, he seems to have some beef with her ex (well, she does too), and where exactly he came from is still a mystery...