"Invisible Irtsinka" is an exciting tale about friendship and adventures between a boy named Henry and a small creature named Irtsinka. Irtsinka turns out to be invisible to everyone except Henry, which creates a lot of comical situations. Together they save the city from an unexpected danger, solve the mystery of an ancient artifact and help each other through difficult moments in life. This book is full of charm, mystery and important life lessons that make it a great choice for readers of all ages.