がいうちゅう
outer space
Noun
別べつに制服せいふく着込きこんだ外宇宙がいうちゅうの使者ししゃが、伴侶はんりょを求もとめて徘徊はいかいしてるわけでもなかろうに。
It's not as if an emissary from outer space will have slipped into school uniform and be loitering around seeking a partner.