Time travel brings a former idol, who started his career at fifteen and is now a senior in high school, back to the past. An unscrupulous agent coerced him into leaving the entertainment industry, resulting in a lack of income. The main focus after traveling back in time becomes self-sufficiency. However, without a system or special abilities, how can he recreate past successes relying solely on his memories? But it’s fine, as he is a person who succeeded in passing the 985 exam through his own efforts. A new era, a new world, and the struggle begins alongside outdated idols.