po
A quick, gentle flash of color or light — cheeks suddenly turning pink, or a small light popping on. A cute, momentary burst of warmth or brightness.
💡Receiving a compliment — 'Her cheeks went po and turned rosy.'
褒められて頬がぽっと赤くなった。
Her cheeks went po and blushed when complimented.
When their eyes met, her face turned ___ red.
目が合った瞬間、彼女の顔が○○と赤くなった。