Yukimura is working hard on his computer, as usual, when Himuro suddenly says, "I am in love with you. Her confession greatly shakes Yukimura. Unlike the last time, Himuro states her feelings matter-of-factly. Yukimura asks, "What theory did you use to determine that you love me?" Himuro replies by taking Yukimura out on a date and begins performing experiments they've done before such as measuring heart rates, using an emotion counter, collecting saliva, and the kiss experiment.
and no matter how fast my heart may race...
...ومهما تسارعت نبضات قلبي
und ganz gleich wie schnell
mein Herz auch schlägt,
que mon pouls s’accélère quand…
Elle est mignonne quand elle dort…
e se il mio cuore batte forte...
e não importa o quanto
meu coração acelere...
даже если мой пульс учащается...