Don't know if your question is still relevant, but the artist is Taro Nogizaka (his name is written in the black squares at the bottom right ). He's famous for drawing the manga "Team Medical Dragon". He's probably Matsuena's pal, since he's already drawn an omake for the 30th volume of Kenichi (a beachvolley game where Shigure+Miu play against the two heroines of Team Medical Dragon)
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Don't know if your question is still relevant, but the artist is Taro Nogizaka (his name is written in the black squares at the bottom right
). He's famous for drawing the manga "Team Medical Dragon". He's probably Matsuena's pal, since he's already drawn an omake for the 30th volume of Kenichi (a beachvolley game where Shigure+Miu play against the two heroines of Team Medical Dragon)