Joint campaign by NHK and Advertising Council Japan.
6.9EspecialCross Road
2014 · 1 ep.
5.3EspecialTaisei Kensetsu: Singapore
2018 · 1 ep.
5.5EspecialTaisei Kensetsu: Bosporus Kaikyou Tunnel
2011 · 1 ep.
5.5EspecialTaisei Corporation CM: Sri Lanka Expressway
2013 · 1 ep.
5.5EspecialTaisei Kensetsu: Shin Doha Kokusai Kuukou
2008 · 1 ep.
5.6EspecialTaisei Kensetsu: Vietnam Noi Bai Kuukou
2014 · 1 ep.
5.2ONA667-tsuu no Love Letter
2023 · 1 ep.
