E-Net Frontier

2008 release

2007 release

2012 release

2014 release

Hirajima Natsumi, Okada Mei, Hazuki Himari, and Negishi Ai arrive at a luxurious beach house. Soon after arriving, they are informed that they will be competing in a series of challenges, the overall winner of which will be deemed the "center" of Merm4id. These challenges are interspersed with gravure-type segments that feature all four unit members. Challenges include guessing what sports each member played in school, cooking omurice, drawing logos from memory, guessing smoothie flavors, a capture-the-flag game involving inner tubes, and guessing items related to their D4DJ characters through touch.

2019 release

2012 release

2004 release

2011 release

2006 release

2016 release

2009 release

2010 release

2003 release

2018 release

2019 release

2010 release

2014 release

2013 release

2010 release