Look at the original source (a tweet, a chat, a lyric, etc.) and see whether there is a Japanese‑script version. If you can find the kana/kanji, the meaning will become crystal clear.
The series relies on "gap moe"—the contrast between the brother's intimidating size and his actual personality—alongside the comedic tension of living in close quarters. Why Fans Search for "Free" Access uchi no otouto maji de dekain dakedo mi ni kona free
うちの弟はマジでできないんだけど、見に行くのはフリーです。 Look at the original source (a tweet, a chat, a lyric, etc