Serial is going okay but please change that grandmother character first, the worst character ever to spoil a serial.... the way her acting, her dressing sense, lagging the dialogues and telling it harshly, though she is doing a senior person character it's just a completely waste as she's trying to behave too much is making the serial go weird, if her role continues chances are there that people might stop watching the serial itself.
Mr. Jagan being a producer kindly look into selecting a better personalities for the suitable roles, don't select them in a easy go way...... shwetha's father character is also worst but though it is okay first change this grandmother.
Serial rating would be 4 but only if you change the character unless until it will be 1.