Rizelmine Episode 18: School Trip to the West... A Charming Battle Swapping!?
Episode 18 of 24 of Rizelmine, aired November 10, 2002, 15 minutes. Available with English subtitles and dub where released.
Episode summary
Iwaki Tomonori is an average 15-year-old boy who likes older women. He happens to have a crush on his teacher, but soon thereafter, learns she has become engaged. He heads home brokenhearted, only to find a 12-year-old girl named Rizel at his home, who he learns the Japanese government has married…