Vocabulary consisting only from characters you are able to read
無料
むりょう
free, no chargemix
特色
とくしょく
(1)characteristic, feature, idiosyncrasy, personal colour, (2)spot color (in printing) mix
外
ほか
other place, the restjlpt5
いつの間にか
いつのまにか
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3
自白
じはく
confession, acknowledgement, acknowledgmentsuru
急に
きゅうに
(1)swiftly, rapidly, (2)suddenly, abruptly, immediately jlpt3, mix
号
ごう
(1)number/edition/make/model/issue/part of that group/ (2)sobriquet/pen-name/(P) leda1, math