Hihi's tough coaching at Yumi & her previous disciple was very extreme but it only works at a certain time like in Showa period as being mentioned by Eye-dad Kitarou.
Yumi however was persistence on her tennis practice & she made it to the top match. & yet Hihi still never gave her the slightest praised that she truly deserved.
It is fair to say that Yumi did shown some disappointment & she have the right to protest & lodge her dissatisfaction to the press!
Whatever it is Yumi is dang cute, Yahooo!!💖🥰