トシカズの母・和子は相変わらず、息子の成績が悪いことに苛立っていた。シャーロックおじさんは和子に、そんなにトシカズに歯科医院を継いでほしければ「十三夜の梅干様の丑三つ参り」をしてみてはどうかと告げる。最初は半信半疑だった和子だが、あまりに情けないトシカズの様子に、ついに決断。丑三つ参りを始めた！
Toshikazu's mother, Kazuko, is still frustrated by her son's poor grades. Uncle Sherlock tells Kazuko that if she really wants Toshikazu to take over the dental clinic, she should try the "Thirteen Nights of Umeboshi-sama's Ushi-Mairi". Kazuko was skeptical at first, but when she saw how pathetic Toshikazu was, she finally made up her mind. She started the Ushi-Mitsu-Mairi!
