Tsuihou sareta Saikyou Seijo wa, Machi de Slow Life wo Okuritai!

One day, the powerful "Saint" Healer Rina is suddenly banished from her childhood friend's hero party. While shocked by this unfair dismissal, Rina decides to completely forget about her former party members and start living her long-awaited, slow lifestyle! But before she can begin to settle into this new routine, her other childhood friend, Henry, appears! The two have not seen each other in five years, and Henry is now a nobleman. While Rina is thrilled by the reunion, it seems like there's suspicious activity going on within her former party?!

(Source: AlphaPolis)