While on the way to school, Hayato discovers that Karen isn't wearing panties. He spends the rest of the day trying to avoid seeing under her skirt...but Karen still seems a little upset.
Since you appear to be 
focused on Karen today,
Du scheinst heute auf Karen
fokussiert zu sein.
Como parecen llevarse bien hoy,
Como parece que hoy os lleváis bien,
Izumi semble attaché à Karen,
aujourd’hui,
Dato che oggi sembri
particolarmente interessato a Karen,
Parece que você está 
focado na Karen hoje.