i think Nagase's tatoo isn't permanabt!!!
look closely!! here it's on his chest:
and here it's on his arm!!!:
@Mary-Tina: why would her name be Nagase Saki??!!!!!!!!
it'll be Aiko Nagase! O_o'' they don't change their first name, no one does....
and removing the tatoo is pretty much pain-free and leaves NO scars these days. that is if she uses the laser to remove it. and it's not like she can't afford to pay to get it removed with the laser.