The Harlequin Opal (Vol. 1-3)

Four school friends arrange an appointment in 15 years and are committed to keeping it, no matter what surprises and unforeseen adventures are prepared for them by life. A novel starts with the reflections of one of the protagonists on whether the others will keep the promise or he is the only one to keep the foolish promise of childhood. All four come. Father Time has given each of them a peculia...