The name of the singer is Takayan. Takayan is a Japanese singer/rapper mostly known for his song Toy. The composer of this song is none other than himself. The song has 13 million views on YouTube and is steadily increasing each day.
The message of the song is that it tells the story of a girl who wants to be loved but cannot get the love she wants to get. She has a hard time choosing from long lasting love to just plain making "love". She wants to love someone whole heartedly but her second personality thinks that making "love" is all she needs because it's exciting and fun. Each day she has a random man to sleep with for her enjoyment. Now she's confused on what to do. The pain that she feels, the emptiness that she feels, she can no longer endure.
For me it spreads the message that long term relationships are what you need in life and not those short ones with benefits. Because what you truly need from a relationship is not the "fun" aspects of it. Rather the wholesome time you spend with your significant other. To the extent that each day is a fun day if you are with them.