Graphics: Cute and very defined. The sprites have a clear edge with simple but charismatic animations that smoothly portrays their various egos.
Sound: The game revolves around Hatsune Miku. So you're gonna have to expect abnormally high pitched and fast paced music. It's not a personal favorite genre of music but compared to most other tapping games I've played, the bgm here was much more enjoyable. (At least once you've already gotten used to it and/or reached the ultimate level of weeb)
Gameplay: I don't really think I have to go in depth here. Just tap (or autoclick), earn coins and upgrade your vocaloid army.
Overall Impressions: A casual tapping game you can enjoy leisurely at your own pace for a long term. Has potential to be a favorable game to collectors due to the various event costumes assumed to be released in the future and finally one you should avoid spending on (unless you really want to, by all means, help support the game).