Sun and dark girl. - TERASENE is a defense game for your smartphone in which you need to drive off monsters while guarding a young lady. Unfortunately, this lady just so happens to turn to ash in the sunlight. Use your powers of the sun to protect her but be careful where you point the light rays.

Your main goal in Sun and dark girl. - TERASENE is to protect the young lady from any type of monster or demon who might want to harm her, and the only way to do that is by driving them off. Monsters and demons approach the girl to attack her.