Summer Pockets story:
To help manage his recently deceased grandmother's effects, the protagonist Takahara Hairi travels to Torishirojima during his summer vacation. Hairi finds himself starting to adjust to life on this island, surrounded by nature far lusher than anything he has ever come across back in the city. Time seems to flow by casually on this island, and as it does, memories of something nostalgic keep coming back to him... Memories of something he had long forgotten.

This series of short manga chapters by various artists is published for free online to hype up a new release of the visual novel.

Chapter 1 by Hinata Nonoka
Chapter 2 by Remotaro
Chapter 3 by Asami Yuriko
Chapter 4 by ZEN
Chapter 5 by Ikeda Jun

Links:
Original Visual Novel (Steam)