Kimi No Tsuku Uso To Hontou君のつく嘘と本当; Your Honest Deceit

From Dramaqueen: As a university student, Kuze secretly harbored feelings for the lawyer-cum-lecturer, Kitahara-san. However, knowing his professor was married, Kuze sealed away those emotions. Now, seven years later, Kuze finds himself working as Kitahara’s assistant because of a bizarre coincidence. What’s more, Kitahara is no longer wearing his wedding ring.... Can Kuze revive his feelings and reach out for happiness?