>>64532723>Blue horizon is less than half the quality of ShinkiroAnd? Putting aside that you are apparently extremely easy to please when it comes to music, not to mention how idiotic it is to compare a comedic upbeat anime OP with a melancholic city pop music video, let's entertain the premise for a second anyway, for the sake of illustrating that (You) are a retard:
The quality of Shinkiro does not indicate that Gura "used" Marine. Marine "used" Gura. Marine was the one who asked Gura to participate, Marine was the one who had the opportunity to have Gura as a second voice in her song (without which the "quality" would have been drastically reduced), and Marine was the one who benefited in terms of viewership and exposure. Where, exactly, is anything to suggest that Gura exploited the opportunity for her own benefit, or even that she gained anything out of the collaboration AT ALL other than the opportunity to work with a beloved senpai?