the ml here is also a cold hearted immortal who is actually a demon lord who later falls for a girl with magic powers. In both dramas, the ml slowly opens up after experiencing fls love. besides, they both are fantasy and xianxia drama, the relationship of ml-fl starts with hate in both of the dramas. Their relationship also takes place in mortal worlds. i believe those who loved Till The End of The Moon, they will also love watching Immortal Samsara.