Uchi No Otouto Maji De Dekain Dakedo Mi — Ni Konai

Comedy / Slice of Life / Romantic Comedy

Uchi no Otouto Maji de Dekain Dakedo Mi ni Konai? (OVA 2021)

Living room. NEE-SAN (20s, cheerful) is on her phone. Friend A (FEMALE or MALE) enters. uchi no otouto maji de dekain dakedo mi ni konai

“Tadaima. You said you wanted to show me something?”

Dekai (でかい) is a colloquial, slightly rough term for “huge” or “humongous.” It emphasizes volume and mass rather than length. This choice of word adds to the absurdity—suggesting the brother’s… attribute… is not just long, but substantial in every dimension. Comedy / Slice of Life / Romantic Comedy

High school student Mizuki has always been proud of her younger brother, Ren . He’s smart, handsome, and popular at school. However, Mizuki’s life takes a turn when she accidentally overhears a rumor that Ren is hiding a massive secret—something his friends describe as being "majide dekai" (seriously huge).

Let me know and I'll do my best to help! Friend A (FEMALE or MALE) enters

(My Little Brother Is Really Big, But He Won't Show It)

“He’s seriously huge. Like, maji de dekai . Want to see?”