Love Hina S01 E12 Changing After the Wedding? Swordmaster Motoko's Sunday Best: Feminine

When Motoko runs out of clothes as they're all in the laundry, she is forced to wear a dress. Furthermore, her swordsmanship has been foiled by not only Tama-chan but also Keitaro. This leads her to doubt herself and things get worse when Mecha Tama-chan begins to create havoc.