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...
Honestly, it's because that 
senpai of mine shows no mercy.
بصراحة، السبب هو سينباي خاصتي 
.الذي لا يظهر أية شفقة
Die Älteren hier zeigen aber
auch keine Nachsicht mit mir.
Todo porque no me tienen
ninguna piedad.
Aquí no conocen la piedad.
Ce Yukimura, c’est pas un cadeau…
Accidenti, il mio senpai è proprio senza pietà.
Francamente, aquele senpai
não tem misericórdia.
Да уж, мой наставник совсем 
не знает жалости.