Sol and Luna →Used Deck

In the reverse theme, it is a card that can be used at the same time as obstruction and reuse, and has no particular disadvantages.
It seems that considerable ingenuity is required to use it in his normal Deck.
Basically, it would be better to use the Book of Sun and Moon.

With a card that sets Book of Taiyou and the Book of Moon at the same time, you can aim to reuse the reverse effect while preventing the opponent's monsters from attacking and using materials.
However, it requires a monster on the opponent's field to activate, and it's turn 1 with the same name, so it's not suitable for bad things like Metapoint Kill.
Also, like the total lunar eclipse, it always requires two bodies to activate, so the dexterity that is the greatest strength of the book of the moon is reduced.
If I were to adopt it, it would be his deck that mainly uses the reverse effect.
Even on the draw, by setting his Flip Monster and then activating it, you can turn the opponent's figurine face down and neutralize it while activating our reverse effect.

Works with Worm. From the usual XY set, 2 obstructions of back defense & bounce are established, and Z/X's battle resistance can be drawn out.
Compatibility with the pensol is also excellent. It's a little romantic, but being able to disable 3 monsters is pretty strong. It's also interesting to have Raikou go through while making the opponent a back defense and negate the destruction resistance.

The effect is, if I may say so, it's written in the card name, but it's something called "Book of the Sun and Moon".
It's a card that can wake you up and put you down at the same time, especially since 《Book of Taiyou》is a Normal Spell and this is his Quick-Play Spell, so you can also wake up with Friche. Considering the surprise of Effect Monster, it is big.
Also, depending on the target monster's battle position, it is possible to wake up both or lay down both.
However, in order to activate this effect, both players must have 1 monster on their field that can be targeted by this effect. It must be said that it is quite troublesome to have to prepare monsters for
I don't think there are many situations where you want to wake up or lay down both your own and your opponent's monsters, and since it's a Quick-Play Spell with the name Turn 1, it can't be used that turn after it's set, and even if it's salvaged, it can't be used that turn. Not being able to use the second card is much inferior to 《Book of Taiyou》.
It sounds good to say that it can be used flexibly for combos, defense, and interference, but it doesn't necessarily mean that a card with dual effects is not always good for both. .