Aquarium Survival 1 and 2 by Hyeon-dong Han / Gomdori co. Price: ¥1200 2 books for ¥2640 It became a movie and is very popular. It seems easy to read like a comic and was fun. Please also see the profile. #Hyeon-dongHan #Han_Hyeon-dong #GomdoriCo #Book #Nature/General