先頭せんとう
sentō

Noun

1. head (of a line, group, etc.); front; lead; forefront; vanguard

さあ出発しゅっぱつしよう。君くん先頭せんとうきなさい。
sāshuppatsu shiyō. kimisentōo ikinasai.
Let's start now, and you go first.