It's "White Day," the day that boys who received chocolates on Valentine's Day give their return gifts to the girls. And Momiji has one big surprise gift for Tohru!
...but I thought that might suit you best.
aber ich dachte,
die steht dir sicher am besten.
pero pensé que eso podría quedarte bien.
Mais je me suis dit que ça t’irait bien.
mas vai ficar bem em você.
Уверен, тебе будет к лицу.