A jpop boy band with a few members. Have seen two of their videos. And one of them if I am not wrong was an opening for an anime
The first song which I think was an anime op was upbeat song and featured a man in a corn suit(?) and children too. The second video takes place on a beach and places near by. Again an upbeat song with an colourful video. It also had then travelling in a car or truck of sort and had girls in bikini in it. I think the group might have like 5 members. And I saw the videos on YouTube 2-3 years back.