
Part of Series
When Ruka was younger, she saw a ghost in the water at the aquarium where her dad works. Now she feels drawn toward the aquarium and the two mysterious boys she meets there, Umi and Sora. They were raised by dugongs and hear the same strange calls from the sea as she does. Ruka's dad and the other adults who work at the aquarium are only distantly aware of what the children are experiencing as they get caught up in the mystery of the worldwide disappearance of the oceans' fish.
Author

Daisuke Igarashi (五十嵐 大介, Igarashi Daisuke) is a Japanese cartoonist, acclaimed for his refined art style and philosophical themes. His manga often use sci-fi or magical elements to touch on the relation between mankind and nature. Igarashi began his professional career in 1993 on the pages of the magazine 'Monthly Afternoon'. Therein, he published the stories composing Hanashippanashi (1993-1996), a few other shorts collected in the volume Sora Tobi Tamashii (2002), as well as his first minor success, the series Little Forest (2003-2005). In 2003 the author started a fruitful collaboration with the alternative manga magazine 'Monthly Ikki', in which he serialised his most famous works to date: the anthological Witches (2003-2004) and Children of the Sea (2006-2011). Both series were awarded an Excellence Prize at the Japan Media Arts Festival, respectively in 2004 and 2009. Igarashi's latest works are Umwelt (2017), collecting short stories appeared in various magazines between 2004 and 2014, and the 5-volume long manga Designs (2016-2018).