We do know that Tuxedo Kamen is Mamoru Chiba who is just as annoyed at Usagi as he is in the anime and the manga...that much hasn't changed...He doesn't call her odango atama or anything else like that...the only thing that comes close to that is that he calls her a model wanna be the second time that they run into each other...In Act four he all but accuses her of stalking him or in his words loitering around him and then tells her to stop being a hyper idiot.

We also know that Tuxedo Kamen has a soft spot for Sailor Moon...and is very protective of her....which is like the anime and the manga. I mean he actually smiles twice in Act 4! ^_^

We also know that they are going along with the whole I could be your enemy storyline...but then we know that he's one of the good guys....He is after all Prince Endymion I don't think that fact is going to change and Usagi is his princess.....He is plagued by a dream where his princess pleads with him to find the mysterious silver crystal...He also now knows that Sailor Moon is Usagi...hopefully we will begin to see him start to court Usagi... ^_^

Well we now know that Mamoru has a fiancée named Hina...he promised to marry her when they were toddlers and the woman is actually going to hold him to that promise ^^; I myself think that there is more to Hina than meets the eye [hmm she seems very Pluto like to me could she be a sleeping senshi? And man would that complicate matters!] Anyway it is now clear that Mamoru is torn between his love for Usagi and his promise to Hina...Add graduating from high school and going off to Saint Ford university in England and he has a lot on his mind. To complicate matters Mako has figured out his identity and has threatened to fry his ass if he gets near Usagi again and I would assume that this would mean as Tuxedo Kamen as well as his daily identity.

This guy really needs to awaken the prince inside him...which it looks like is going to happen...Now that Usagi knows who he is...then there is the factor of him dying which I think gave him back his memories...then there is the fact that Usagi/Moon is his Princess Serenity....what will this poor guy do?

Now that Hina has let him go...Mamoru has left for England to try and find out [remember] who he is...and to go to school abroad...hopefully he won't be gone long.

At long last Mamoru has come to his senses and he and Usagi are finally together...Zoi took him from his apartment in London and brought him to the dark kingdom so that he could regain his memory...the result of which was the partial awakening of Prince Endymion...who goes off to rescue his princess sigh he is such a dream hunk. He tells Usagi that he came back because he does not believe that their relationship will cause the end of the planet...that she and him are going to prove that their love is not doomed.

It looks like Tuxedo's incarnation is replaced by Prince Endymion...which I have no problem with...Mamoru is so happy with Usagi even if she does frustrate and embarrass him sometimes...but he is also a very honorable person so when the choice of whether to sacrifice his former friends or go with Beryl he chose to go with Beryl...He was in complete shock when Sailor Moon turned into Princess Sailor Moon and defied Beryl to go and bring his Usagi back...he then vowed to return to her...before leaving with Beryl.

Endymion is in a fix he has one Shitenno left and that is the  dis-loyal Jadeite...Beryl put this thing in his chest that is killing him when he thinks of his love for Usagi...he can't see Usagi with out it killing him...Mio is stalking him and Beryl well she won't give him up.

Mamoru tried to stop Queen M by taking all of her energy into his body that didn't work it cost him his life by his own sword...By the hand of his own  princess....the key to this whole series is that Prince and Princess needed to use the crystal together...love was always the key...that love got them both another chance...