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...
I know I need to decide on a theme for 
my research as soon as possible, but...
أعلم أنه يجدر بي اتّخاذ قرار بخصوص 
...بحثي في أسرع وقت لكن
Mir ist ja selbst klar, dass ich mir endlich ein
Abschlussarbeitsthema suchen sollte, aber …
Sé que debo elegir un tema
para mi tesis pronto, pero…
Sé que debería elegir pronto
un tema para mi tesis, pero…
Il faut que je me dépêche
de trouver un sujet de thèse.
So che devo decidere al più presto
l'argomento per la mia ricerca, ma...
Eu sei que preciso definir o tema
da minha pesquisa, mas...
Мне, конечно, нужно как можно скорее 
определиться с темой работы, но...