I notice you're asking about a download for for Android. However, I need to provide some important context:
Unlike mainstream mobile games, Summertime Saga is not distributed via the Google Play Store due to content policy restrictions regarding adult themes. Consequently, the APK distribution model operates differently. Summertime Saga 0.20.19 Apk Download For Android
: Major expansions to the central mystery surrounding the protagonist's father. Summertime Saga v0
If the above link is not working, you can try downloading the Apk file from other reputable sources, such as: The Main Story Part 2 : Major expansions
: Locate the downloaded file in your "Downloads" folder and tap it to begin the installation process. Launch the Game : Once installed, the game can be played without an internet connection. ZBrushCentral Key Game Features Narrative Gameplay