ゆくゆく
on the way; as one goes; in the future; someday
Adverb
「今度こんど西にし高こうの女子じょしと合ごうコンするんだけど、太郎たろうも来こない？」「行ゆく行ゆく！」
"Hey Taro, I'm going on a singles party with some girls from West. You want to come?" "Sure!"