The Villainess Turns the Hourglass, Vol. 3 (manga)

Amidst the feelings of self-doubt and helplessness caused by Oscar’s sudden betrayal, Aria discovers that it was Lady Isis who was pulling the strings all along. Although Aria failed to win Oscar over in the end, she received a sudden invitation to the gathering of intellectuals from the mysterious Asher, whose intentions remain unclear and suspicious at best. Though it piques her interest, can she really trust Lord Asher?