To find proof as to whether he is "in love" or not, Yukimura pats Himuro on the head from point-blank range. Seeing this, Ibarada, an upperclassman in the Ikeda Lab, talks about the need for a control experiment. In other words, in order to prove that the racing of his heart is because of Himuro specifically and not just because he's facing a woman, Yukimura has to pat Kanade and Ibarada on the head too. Himuro, on the other hand, sets out to prove that food made with love tastes better and cooks, but...
You could, at least, 
narrow it down to playing just one.
.يمكنك لعب واحدة فقط
Beschränke dich wenigstens
auf ein Spiel zur selben Zeit.
Al menos podrías jugar una sola cosa.
Al menos podrías limitarte a una cosa.
Choisis au moins un des deux.
Potresti almeno giocare a uno solo...
Você poderia ao menos
limitar a jogar um só.
Можно было бы ограничиться одной игрой.