Onee-san To Ii Koto ♡

The volume includes the following chapters: 1. Over Drive (オーバー♡ドライブ, Over ❤ Drive); COMIC X-Eros #50 2. Over Charge (オーバー♡チャージ, Over Charge); COMIC X-Eros #61 3. Over Summer (オーバー♡サマー, Over Summer); COMIC X-Eros #67 4. Swimmy! (Swimmy！, Swimmy!); COMIC X-Eros #75 5. Isshoni Swimmy! (いっしょにSwimmy！, Swimmy Together!); COMIC X-Eros #79 6. Motto Swimmy! (もっとSwimmy！, More Swimmy!); COMIC X-Eros #83 7. Manabu Obocchama wa Shishunki (学お坊ちゃまは思春期, Master Manabu Has Hit Puberty); COMIC X-Eros #53 8. Himitsu no Jikan (ひみつのじかん, Secret Time); COMIC X-Eros #56