I can't tell just by looking at each other

I can't tell just by looking at each other a song by Cyuunels on BeMusic

Hydrangea by Cyuunels,
Some thoughts for the future by Cyuunels,
It's just a way to kill time by Cyuunels,
Don't say that by Cyuunels,
Bend by Cyuunels,
Elastic by Cyuunels,
Then by Cyuunels,
Makes me want to compete by Cyuunels,
Dropsy by Cyuunels,
Only once by Cyuunels,
Still, little by little by Cyuunels,
I can't tell just by looking at each other by Cyuunels,
Judgment by Cyuunels,
Show your shame by Cyuunels,