Hibi Chouchou and Hirunaka no Ryuusei crossover bundled with Margaret 2014 #11 as separate-volume supplement.

Hirunaka no Chouchou: Shopping Biyori no Shinhakken (A Shocking Day for New Discoveries)
A shopping mall date with Suiren and Kawasumi. But... Suiren gets lost?! She and a small girl find themselves at the Lost Child centre where suddenly Suzume and Mamura come along!

Hibi Ryuusei: Suzume no Parallel Koukou Nikki (Suzume’s Parallel School Diary)
The Suzume who steals everybody’s attention at the high school entrance ceremony. Though she's no great beauty, she does things at her own pace and is a hot topic amongst everyone. In the middle of this, the only person who doesn’t notice her, Kawasumi – will he become interested?!