From the back cover:
Tsukushi’s friend Yuki is still fixated on Sojiro*, a member of the F4. While struggling to understand him she immerses herself in a mysterious event from his past. Meanwhile, spies continue to track Tsukushi and Tsukasa’s every move. The two of them will have to take some outlandish steps to outsmart the snoops and get some “alone time!”
* The back cover actually says “Akira” here. Tsk tsk, VIZ. While Akira and Sojiro might’ve seemed interchangeable at the beginning of the series, they certainly aren’t anymore.
Here’s another volume that very nicely balances the relationship between Tsukushi and Tsukasa with Yuki’s ongoing efforts to get through to Sojiro. On the former front, after an annoying bout of insecurity in which Tsukushi wonders whether Tsukasa just sees her as a novelty because she’s poor (since she hasn’t seen him return to the dingy apartment he rented next door), they proceed to have some cute/good scenes, like when she thinks that her laying next to him will help him sleep in an unfamiliar place (wrong!) or when they very nearly consummate their relationship.
Yuki, meanwhile, has been told by Sojiro that there was one girl he loved—whom we meet in a side story called “Story of an Encounter”—but he did her wrong by not showing up to a certain rooftop at 5 a.m. as she’d requested. Yuki searches through a bunch of rooftops until she finds the right one and drags Sojiro off to see what the girl had been trying to show him. Personally, I’m not sure what Yuki sees in Sojiro, but I like her calm determination quite a bit, so I’m interested to see where this’ll go.
Once again, not a whole lot more to say other than “it’s good and here were my favorite bits.” With this volume, it also beats Basara for the honor of Longest Shoujo Series I Have Read.