Vocabulary consisting only from characters you are able to read
やる気
jaruki
willingness (e.g. to do something)/eagerness/motivation/inspiration/determination/high aspirationsjlpt3
いつの間にか
icunomanika
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3
工学
kougaku
engineeringmix
休み
jasumi
rest, recess, respite, vacation, holiday, absence, suspensionjlpt5
書き下ろし
kakioroši
writing something on commission, newly written textmix