Vocabulary consisting only from characters you are able to read
空前
くうぜん
unprecedented, record-breakingmix
組み立て
くみたて
construction/framework/erection/assembly/organization/organisation/(P)adj, leda1
七日
なのか
seven days, the seventh day of the monthjlpt5, toki
いつの間にか
いつのまにか
before one knows, before one becomes aware of, unnoticed, unawaresjlpt3