>>9769>first Jadeite fight
Which brings us to the next part. Each time you first made physical contact with one of the Shitenoh, you would have gotten a flashback to them swearing fealty to Prince Endymion. Each time, giving a greater and greater hint that they should be serving you, and not Queen Beryl.
The connection will be really blatant when Tuxie is killed protecting Usagi, and she revives him with the power of the Silver Crystal. The particular general will be seen starting to lose his corporeal form, only having it restored once Tuxie is revived.
This is a hint to getting rid of the shitenoh for good, as otherwise, they will simply revive, pulling some energy from Beryl/Metalia, and some from Mamoru (while also giving him a crazy dream between episodes). You will need to get them to return their loyalties to you to be able to get to Beryl and Metalia.
But, it's also a hint as to how to resolve one of final bits from Splash Star. The final battle in Splash Star is amazing. Saki and Mai both have two transformations, their original Bloom and Egret transformations, and then also the Bright and Windy transformations they get as their mid-season upgrade. In the final battle, they use the Bright and Windy forms they've been using all of the second season, and they're assisting by Michiru and Kaoru, two of the Dark Fall's lieutenants that have been spying on them, befriending them, and fighting against them on and off. After getting pretty soundly defeated, they get recharged by the power of the spirits. Saki and Mai transform back into their original Bloom and Egret forms, and the other two girls get the power of Bright and Windy. They transform, but not all the way into PreCures.
After an absolutely amazing final battle (I really can't sing its praises high enough). They defeat the final boss. Side note: This was going to be the final boss of season 1, ramped way up in difficulty, he would have absorbed the power of Metalia and the Dark King, requiring all of your combined efforts to defeat him. Anyway, after defeating him, Michiru and Kaoru collapse and start to fade away. They were created by the enemy and their life was sustained by him. Without him, they slowly fade away. In canon, the power of the spirits revive them, and the issue is resolved almost as quickly as it comes up, losing much of the emotional punch.
In the quest, the spirits of the Shitenoh would have appeared and told you to bind their life force to you, in the way that Endymion did to them in the past. As the girls are fading away, they swear fealty to you, and you rename them Zircon and Carnelian. Their soul is bound to those gems, and they share in your life force instead of the final boss's.