大手術を控えた少年から、マミにお見舞に来てほしいという手紙が届いた。立花はイメージアップのためと行かせるが、本当は日本マフィアの首領・銭亀為五郎が重病のため、孫のケンがマミファンの祖父のためウソの手紙を送ったのだ。バレたらスキャンダルになると立花はあわてる。報道陣を前にマミは上手くその場を切り抜けるが・・・。
Parthenon Productions receiving a heartfelt letter from a boy named Kenji facing a surgery that could prove just as deadly as the disease it is meant to treat tugs on Hayato's heartstrings while Shingo sees it as a professional opportunity as he charges Hayato a schedule change for Creamy Mami. The convoy of news vans provides Kenji the perfect excuse to go investigate the hullabaloo with his derisive neighbors; while Yuu tries to give her swim coach the slip after Midori intercedes for her, the actual situation is demonstrated to be somewhat more complex than meets the eye when it turns out that it is Kenji's yakuza grandfather Tamegoro Zenigami that needs the pep talk. Shingo and Hayato have quite the imbroglio on their hands: it is a public relations disaster if it is argued they have ties to the yakuza and also if they spurn a young boy's entreaty for assistance because of what he was born into. While the mirage Creamy Mami leads Kenji and Shingo through takes care of the other rep
