The title " Hizashi no Naka no DS " typically refers to a fan-made homebrew port or demo of the PC title Hizashi no Naka no Riaru (Real in the Sunshine) for the Nintendo DS.
If you own the original game, emulating your own dump is a protected right in some regions (e.g., EU, fair use arguments in the US). If you don’t, consider this guide a theoretical exercise or a reason to hunt for a used copy online. full install hizashi no naka no ds rom
To install a ROM on a Nintendo DS, you'll need: Installation Guide The title " Hizashi no Naka