Vocabulary consisting only from characters you are able to read

kanji kana meaning randomReload
約束 yakusoku promisejlpt3, jlpt4
いつの間にか itsunomanika before one knows, before one becomes aware of, unnoticed, unawaresjlpt3
勉強する benkyousuru to studygakkou, jlpt5, suru, verb
室内 shitsunai indoor/inside the room/(P)adj, leda1
旅客 ryokaku; ryokyaku passenger (transport); passenger (transport)mix
一回戦 ikkaisen first game, first round (of tennis, etc.)mix
一次元 ichijigen one dimensionalmath
数独 suudoku sudokumix
合図 aizu sign/signaljlpt3, leda1, suru
取り戻す torimodosu to take back, to regain, to get back, to recovergodan, verb, vtrans