Start year: 2011
Issues in volume: 24
Proper Japanese Title: +チック姉さん(プラスチック姉さん) (Purasu Chikku Nēsan)Originally serialized in Young Gangan, because the chapters are not published on a consistent schedule (and are quite short), they are often repinted in Zoukan Young Gangan when new chapters are published.
Publisher: Square Enix
Issues in this volume: