About the Authors

Masanori Takano

Contributed equally to this work with: Masanori Takano, Fumiaki Taka

Roles Data curation, Formal analysis, Methodology, Project administration, Supervision, Visualization, Writing – original draft

takano_masanori@cyberagent.co.jp

Affiliation Akihabara Laboratory, CyberAgent, Inc., Tokyo, Japan

Fumiaki Taka

Contributed equally to this work with: Masanori Takano, Fumiaki Taka

Roles Conceptualization, Supervision, Writing – original draft, Writing – review & editing

Affiliation Faculty of Human Science, Kanagawa University, Kanagawa, Japan

Soichiro Morishita

Roles Writing – review & editing

Affiliation Akihabara Laboratory, CyberAgent, Inc., Tokyo, Japan

Tomosato Nishi

Roles Writing – review & editing

Affiliation College of Information Science and Engineering, Ritsumeikan University, Shiga, Japan

Yuki Ogawa

Roles Writing – review & editing

Affiliation College of Information Science and Engineering, Ritsumeikan University, Shiga, Japan

Competing Interests

M.T. and S.M. are employees of CyberAgent, Inc. (one of the parent companies of AbemaTV). There are no patents, products in development, or marketed Cover Letter products to declare. This does not alter our adherence to PLOS ONE policies on sharing data and materials.