이 있는데

there is

→ 이
phrase Uncommon #15,230
there is Used after a noun ending in a consonant to say that something exists or is available, often as background for what follows. The ending can also imply “and” or “but” depending on context.
KO: 근처에 좋은 식당이 있는데 같이 갈래요?
EN: There’s a good restaurant nearby. Want to go together?

가는 길에 강이 있는데!

There's a river on the way!

— 극장판 귀멸의 칼날: 무한열차편 (2020)

시험이 있는데

I have an exam.

— 동경 이야기 (1953)

시내에 박물관이 있는데

There's a museum downtown, but...

— 8과 1/2 (1963)

죽이는 농담이 있는데 재미 하나도 없어!

I’ve got a killer joke, but it’s not funny at all!

— 택시 (1998)