Do I need to download an app to watch At the wedding, the husband passionately sang his white moonlight?

No. It plays in any mobile or desktop browser, so there is nothing to install.

At the wedding, the husband passionately sang his white moonlight — Watch Free (30 Eps)

Where can I watch At the wedding, the husband passionately sang his white moonlight online for free?: All 30 episodes are free on dramatap and play straight in your browser — no app download and no account needed.
How many episodes does At the wedding, the husband passionately sang his white moonlight have?: 30 episodes in total.
Do I need to download an app to watch At the wedding, the husband passionately sang his white moonlight?: No. It plays in any mobile or desktop browser, so there is nothing to install.