A Hanamura-san On Each Arm!

Mei and Minori are twin sisters. They have the same face, but they're completely different!?

Note: While the series was published in the 4-koma magazine Manga Time, it was never compiled into a volume by the publisher. However, Enomoto released a doujinshi compilation herself called「両手に花村さん！商業まとめ本」that collected all 12 chapters. It's unfortunately quite hard to find now.