Each volume of Merman in My Tub contains colour inserts and features eye-catching character designs and artwork. What happens when an intruder from the sea stakes claim to your bathtub? A cool yet demure teenage boy named Tatsumi must learn to live with the self-obsessed and playful merman, Wakasa, in a small Tokyo apartment. These two dissimilar young men will learn what it takes to deal with one another in their everyday lives. Who knows, maybe something beyond friendship will unfold between them? Stranger things have happened. Or have they?