"Penguin Brothers" by Ayumi Shiina 5 volumes
Hina is the newest school transferee. She learns soon enough that the students are divided. They see the world in "Black" and "White" with no gray area in between. But they'll be in for a surprise on how her sense of justice, brute force and simple-mindedness can upset or restore (?) the balance. Another manga that I can picture as a funny live action with just the right tinge of drama. I love the natural pace of things. It doesn't seem rushed and although there are unresolved questions I felt good and satisfied with the ending. Nothing fancy but I simply enjoyed this one. Like "Hana Yori Dango" I was also hesitant to label this as revere harem as there are also a few supporting female characters. But I justified it on the recurring emphasis of the main characters on the covers by mangakas.