Series bookhead out now ⇄ wait a little longer
The Day of Thunder
A summer pool day — then a sudden FLASH! If you can hear the rumble, the lightning can already reach you. Out of the water, away from tall trees, and — don't rush out when the sky first clears. Count the flash-to-rumble with Sora, Riku and Umi, and learn the right moves for a thunder day.
A peek inside
This story ends at a crossroads — and your child is the one who chooses.
The rain has stopped. What would you do?
AHead out now and get back to the pool.
BDo what the notebook says — wait a little longer.
Sign up to read this book — and the whole growing series.
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A series to keep readingThemes deepen as your child grows
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Your child's own seriesStarring their name — a new episode unlocks each week
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Parent-child dialogue cardsA question in every book — for bedtime talks
✨ Optional: a special edition starring your child's real companion (from your own photo).
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Lumisia Stories — Parent-child series where learning meets adventure. · Operated by EISOL LLC (Tokyo)