Critics have noted the episode's "soft" and wholesome atmosphere, comparing it to other "teasing" series like Teasing Master Takagi-san but with a more supportive undertone, as Kubo's antics often aim to help Shiraishi be recognized.
The first episode of (Kubo Won't Let Me Be Invisible), titled "Heroine and Background Character," introduces Junta Shiraishi , a high schooler with such a weak presence that he is virtually invisible to his peers and teachers. This "mob character" status is so extreme that he is often edited into school photos because everyone assumes he was absent. Kubo-san wa Mob wo Yurusanai Episodio 1
The dynamic changes when his classmate, the popular Nagisa Kubo, reveals she can see him perfectly. The episode follows several lighthearted encounters: Critics have noted the episode's "soft" and wholesome
: Kubo teases Shiraishi by goading him into standing on his chair or desk during class to see if anyone notices him; surprisingly, the teacher only reacts when he is physically in the way. The dynamic changes when his classmate, the popular
: By the end of the episode, Kubo successfully obtains Shiraishi's contact information ("PINE," a parody of LINE) and surprises him by texting to ask if they can hang out sometime.
Kubo Won't Let Me Be Invisible - Episode 1 discussion : r/anime