YMMV: Welcome To Room 305
- Heartwarming Moments: Yoona and Yoon Sung's discussion/yelling match in the middle of the street in the rain in chapter fifty-seven when they both break down crying, finally coming to terms with one another and Yoona's sexuality. Afterwards they become close afain and they're an adorable, if annoying, set of siblings.
- Homage: The art style is similar to Scott Pilgrim.
- Values Dissonance: A lot of what happens (like Yoona beating up Yoon Sung and the homophobia) does happen in Korea, whereas in the West it's frowned upon (although this varies from place to place).
- Mentioned in-series that it's odd in Korea but normal in America for boys to give girls casual goodbye hugs.