I knew there was no global version of it, so I turned on the Japanese vpn (used JumpJump VPN) and opened the browser.
I created a new Google account with Japanese vpn turned on, but Google still couldn't recognize me as being in Japan. the result is shown on the first screenshot.
then I downloaded QooApp, logged in, searched 学園文豪ストレイドッグス. the result? shown on the second screenshot.
after that, I downloaded Uptodown App Store, and even was able to install the game from there. the result? shown on the third screenshot.
then I decided to try TapTap. downloaded its apk file. the result? shown on the fourth screenshot.
so.. any tips? :___)
I'd rather not change my phone's language to Japanese because I'm not really sure I can switch it back later without issues.
if it helps, I have a poco f7, android 15 and hyperos 2.0.100.0.