Hamin/Boat race

If you have moderately high friendship or romance with Hamin, he will invite you to be part of his team for the boat race. However, if you have vea ry high romance, you can invite him to join your team and he will agree. It's important to note that for all MCs except the pirate's daughter, successfully recruiting Hamin is the only way to win the race and unlock the achievement A Victory of Leadership.

Welcome Feast
Hamin's agreement hinges on choosing exactly the right dialogue options during the Welcome Feast. These options increase his romance to the maximum possible at this point in the game. Succeeding in his week 1 date or inviting him to a perfect event increases friendship and respect, but not romance.

[ADD IN OPTIONS FROM SPREADSHEET]