The video, fishing for sea bream with a tenkara seems, believable. I am not so sure about the blog pictures. Maybe a bit of photography trickery, holding the fish close to the lens, made the fish appear larger than they actually were.
The rod: シマノ 天平テンカラ LLS ３６ 竿 [ Shimano tenpyō tenkara LLS 36, I think.
テンカラdeキビレ,チヌ (sea bream) [Aug 6, 2018]
落とし込みでチヌとキビレを狙う！ [Aug 5, 2018]