1-2. Kashiwagi Kyoudai no Renai Jijou (Kashiwagi Brothers' Love Affair)
3. 30-sai, Doutei Kojirasetemasu. (30 Years Old. Talk About Being Virgin)
4-5. Senpai no Lip Cream (Senior's Lipcream)
| Original Publisher | Frontier Works |
| Published | Aug 22, 2013 |
| Serialization | Daria (Frontier Works) |
| Last Updated | July 26, 2018 |
| Languages | English, Japanese |
| Other names | Kashiwagi Kyoudai no Renai Jijou, 柏木兄弟の恋愛事情, 30-sai, Doutei Kojirasetemasu, 30 Years Old. Talk About Being Virgin, Senpai no Lip Cream, Senior's Lipcream, Kashiwagi Brothers’ Love Affair |
