Seven:
Amu
Ran
Miki
Su
Dia
Yoru
Aruto Tsukiyomi (Ikuto's father)
Seas:
Aruto Tsukiyomi, Ikuto's father, was Lost overseas.
Treasure:
Amu Hinamori is the treasure Ikuto has been searching for.
Du would mostly get touched if Du were an Amuto Fan like me. But even if Du ship Tadamu oder other Amu/Ikuto related couples, Du could still get touched Von Seven Seas Treasure's meaning.