"In this Japanese import, the winsome, bike-riding twins from Chirri & Chirra in the Tall Grass (2017) are back for another gently surreal adventure... The twins are identical, with black pageboys, dot eyes, pudgy, rosy cheeks, and Mona Lisa smiles; their delight in the wonders they encounter is pure, unquestioning, and totally infectious. Another charmer." --Kirkus Reviews
"This Japanese import is sweetly magical and perfectly in tune with children's acceptance of the fantastic. Smudgy colored-pencil illustrations are aglow with light and color, whimsically whisking readers along with the rosy-cheeked twins." --Booklist
★ "Another delightful adventure with the adorable twins Chirri and Chirra. ... The gorgeous, fresh colored pencil drawings portray a world of harmony between the girls and the animals. The animals have a fairy-like quality that is very appealing." --Stephanie Tournas, Youth Services Book Review
"A soft, sherbet-hued realm of kindly animals, cozy dens and delicious edible treats awaits in "Chirri & Chirra, Underground" …Like the other Chirri and Chirra books, this one will earn rapturous scrutiny from readers ages 3-8." --Meghan Cox Gurdon, The Wall Street Journal
"unique and highly recommended..." --The Midwest Book Review
"The soft-edged illustrations in colored pencils, pastels, and crayons are filled with details that will have readers wanting to pause and take a closer look." --School Library Journal, Lucia Acosta, Children's Literature Specialist, Princeton, NJ