Here is the full list of all 13 The Men of Yoshiwara: Ohgiya achievements.
Completed All Main Scenarios, Sequels, and Date Scenarios.
Completed with All Endings.
Completed with "Utsusemi" Happy Ending.
Completed with "Utsusemi" Super Happy Ending.
Completed with "Asagiri" Happy Ending.
Completed with "Asagiri" Super Happy Ending.
Completed with "Ageha" Happy Ending.
Completed with "Ageha" Super Happy Ending.
Completed with "Gakuto" Happy Ending.
Completed with "Gakuto" Super Happy Ending.
Completed with "Takigawa" Happy Ending.
Completed with "Takigawa" Super Happy Ending.
Completed the Prologue.