I didn't find anything actually wrong in this set, but I have some suggestions regarding metadata:
- Tachibana Arisu is the character singing this song, but not the real person. The artist should be changed accordingly. According to columbia.jp (the company releasing the idolmaster musics), the artist name should be "橘ありす(CV:佐藤亜美菜)" (romanised: "Tachibana Arisu (CV: Satou Amina)").
All the information regarding the metadata can be found on this page: http://columbia.jp/idolmaster/imasnews/160513.html - The original of this song is by Tomofumi Tanizawa, so please consider adding "谷澤智文", "タニザワトモフミ" and "Tomofumi Tanizawa" to the tags.