[Pre-serialization](https://www.webtoons.com/zh-hant/challenge/%E9%9A%94%E5%A3%81%E5%90%8C%E5%AD%B8%E6%98%AF%E4%BA%BA%E9%AD%9A/list?title_no=456748) [Original Webtoon](https://www.webtoons.com/zh-hant/drama/classmate-is-merman/list?title_no=3269)

Set in the period immediately after the collapse of the bubble economy, it depicts the events that occur on a "princess-like trip to London" by a slightly stubborn, elegant and cute grandmother and her granddaughter, Sawano. Caring for and protecting an elderly person on your own as a young person in your twenties is quite a difficult mission. However, Sawano also has one ulterior motive... (Source: Natalie, translated)

https://mechacomic.jp/books/260748

Included with the February 15th, 2013 inaugural issue of Harta. "Harta" means "treasure" in Indonesian. In this booklet, various creators followed the theme of "harta is treasure" to create one-page manga and illustrations. (Source: Harta, translated)

Rookie detective Asuka Takachiho of the Tokyo Metropolitan Police Department's First Investigation Division is assigned to a case where an editor is found stabbed to death. Together with Mari Dokushima, a popular mystery writer and detective skills instructor, she sets out to solve the case—but what will happen?