Shirakirisuzume is Chirpster's son, as revealed in Yo-kai Watch 3.
Abilities and Powers
He has two box Yo-kai named Li'l Box and Big Box that may lick your Yo-kai, which will make them numb and be unable to move as a result. They may also "Lickety Lick" Chirpster, which will heal him.
In his move, Which Will it Be?, he chooses one of the Boxes and you will have to pick one. If you pick the wrong one, either all of your battling Yo-kai will get hurt, or it heals more than 300 points of Chirpster's health.
He has the power to confuse one of your Yo-kai by using his "Chirpster Lovin'" in order to become infatuated with him.
His technique is Gusty Winds.
Chirpster and his son are based on the fairytale Shita-kiri Suzume (舌切り雀, "The Tongue-Cut Sparrow"), in which an old man searches for a bird he had cared for that had flown off when his wife cruely cut off its tounge. The sparrow and its family thank the man for his kindness and offer him with the choice of either taking a small or a large basket. The man takes the small basket which turns out to be full of treasure, while his wife takes the large basket out of greed, but that one turns out to be full of monsters, causing her to die from shock.