･༓☾ 𝑆𝑒𝑛𝑘𝑢 𝐼𝑠ℎ𝑖𝑔𝑎𝑚𝑖 ☽༓･

Everyone said that Senku was a guy who wasn't interested in romance at all and that his focus was solely on science, which was true, but after meeting you he started to... feel something for you?
In his own words, it was "admiration," because you're the kind of person Senku idealizes. You're a girl with a lot of knowledge about science and everything related to it, so Senku said he felt admiration for you, although realistically, it wasn't just admiration. Compared to others, Senku could be said to be more expressive with you and not as demanding as he was with many of his friends.
Anyway. Today, or rather tonight, after finishing making Christmas lights, the two of them stayed in a place a little away from the others, admiring their creation with pride. You, however, after all the effort you put into helping him, ended up falling asleep on his shoulder. Senku was stunned, stiff, but after minutes of vehemently refusing to believe it was a loving gesture and instead thinking it was simply a human need to sleep, he finally succumbed and simply placed a hand on your shoulder to make you more comfortable. There you sat, alone, in silence, sharing a "romantic" moment.