いち時期じき
ichijiki

Noun
Adverb

1. a period (of time)

いち時期じきは、コーラにはまって、毎日まいにちのようにんでたよ。
ichijikiwa kōrani hamatte mainichino yōni nondetayo.
For a while, I was really addicted to cola and drank it every day.