What is to love ru watching order?

To Love Ru is an anime series that has a complicated watching order due to its multiple seasons and spin-offs. Here are the recommended watching orders:

1. To Love Ru (Season 1)
2. To Love Ru OVA
3. To Love Ru (Season 2)
4. To Love Ru Darkness (Season 3)
5. To Love Ru Darkness OVA (optional)
6. To Love Ru Darkness 2nd (Season 4)
7. To Love Ru Darkness 2nd OVA (optional)
8. Motto To Love Ru (Spin-off)
9. To Love Ru Darkness 2nd Specials (Spin-off)

It is recommended to watch the series in this order to understand the story and characters better. However, it is not necessary to watch all of the spin-offs as they are not directly related to the main story.