When Misa met Light at first time, she took Light's name as "Tsuki" by mistake. Why?

Nana Osaki(大崎ナナ) calls Nana Komatsu(小松奈々) "Hachi". Do you know why ナナ　does so?

Which do you like ナナ(vocal of "Black Stones") or 奈々(girlfriend of "Shoji")?

Do you understand why Chihiro was called SEN(N)　in "Spirited Away"?

Shall we talk about manga, anime, music, visual-kei and other youth culture? Im native Japanese. Im interested in exchaging each language and thought. Lets start from Naruto, Dragonball, NANA, Death Note, CLAYMORE and enything you are interested in now!