It's the rainy season, and Ata of the student council is angry both at Kyotaro for failing to bring an umbrella, and at Ryoma for letting him use his. Meanwhile, a strange student attempts to befriend the Defense Club...
It's hard to notice if 
someone swaps them on you.
وبالتالي من الصّعب أن يلاحظ
الشخصُ إذا ما تمّ تبديلها بأخرى
Und sie sehen alle gleich aus,
man erkennt seinen nicht wieder …
Si on se trompe,
c’est difficile à remarquer.
È difficile notare se qualcuno te lo prende.
É difícil perceber se alguém trocou o seu.
Заметить подмену почти невозможно.