These Kaomoji all use a # to indicate the flushing of their cheeks due to shyness or embarrassment.

Shy with #
(#^.^#)(#`ε´# )ゞ(#⌒∇⌒#)ゞ
꒰⌗´͈ ᵕ ॣ`͈⌗꒱৩(#゚ロ゚#)꒰#’ω`#꒱੭
(#^^#)ゞ