1. Kinjo ni Hikkoshitekita Muboubi Muteikou Kyonyuu Bishoujo Sumire-Chan ni Yaritai Houdai na Natsu
2. Kinjo ni Hikkoshitekita Muboubi Muteikou Kyonyuu Bishoujo Sumire-Chan ni Yaritai Houdai na Natsu 2

Takashi meets the quiet and emotionless Sumire over summer break. She just moved into the neighborhood and there's a lot of things she doesn't know. It's up to Takashi to teach her a lot of new things over the summer...

(Source: Irodori Comics)