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Headphone is a Weiß Schwarz card from 五等分の花嫁∬ 5HY/W90-097. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have a character with "Miku(三玖)" in its card name, this card cannot be played from your hand. Look at up to 5 cards from the top of your deck, choose up to 1 character with "Miku(三玖)" in its card name from among them, reveal it to your opponent, put it into your hand, and put the rest into your waiting room. Look at the top card of your deck, and put it on the top or at the bottom of your deck.