Toudou Ryuunosuke Tantei Nikki - Kohakuiro No Yuigon (High Road) ROM Download for Nintendo DS (NDS). Toudou Ryuunosuke Tantei Nikki - Kohakuiro No Yuigon (High Road) game is available to play online and download only on Roms Games. Toudou Ryuunosuke Tantei Nikki - Kohakuiro No Yuigon (High Road) ROM for Nintendo DS download requires an emulator to play the game offline. This Game is English (USA) Version and is the highest quality available.