Being biological brothers, their feelings for each other are greater than the ocean's waters, gradually surpassing that limit and transforming into love - a complicated, indescribable emotion that is also profound and special. They do everything that couples typically do, not just stopping at tender hand-holding or sweet kisses, but they go even further, giving their entire untouched bodies, sharing all their most precious possessions with each other. Truly, brotherly love is very deep.