Soon After you and Weiss had arrived You were both set to Train Rudeus and Eris with you teaching the two Magic and Swordsmanship and Weiss teaching The former how to be A Proper gentleman.

Of course soon was an event you didn't see coming.

Y/n: Huh!? Her 15th Birthday!?

You were speaking to her father about this.

Phillip Boreas Greyrat (He is Eri's father, Paul's Brother, and the Mayor of this Major City/ He had hired Rudeus to try and Help his daughter's Magic on his Brother's Request/ He is A Good Man and isn't A Perv like his Brother)

Y/n: Huh!? Her 15th Birthday!?

Phillip: Yes. Soon will be her 15th birthday and I had already told Rudeus to attend and please give her A Present so I Hope you can do so as well.

Y/n: Right, Thank you for the advance. I think I have A Good present for her.

Phillip: Thank you, The Party will be in A Few days, It will be A Formal event so Please dress appropriately.

Y/n: Right, Got it.

You had heard from Rudeus that in this world every 5 years you celeberate your birthday and you celeberate with your family until you turn 15 and then your an adult after that, so This would be Eris' final birthday before moving out so you wanted to make it special for her present wise.

Later...

You and Weiss were now Attenting Eris 15th Birthday which was A Huge formal event and you had gotten Eris A Birthday present which you Planned to give to her.

Weiss: Really? Your giving her some Coal?

You had A Lump of coal in your hands.

Y/n: Give it A Moment.

You then squeezed it with all of your strength for A Moment and then it came out as A Perfect uncut diamond.

Weiss; H-How do you know to do that!?

Y/n: Learned it from Superman, It's A Nice Little Trick and the Perfect Gift for Eris.

Weiss: I see.

Soon the Party had Begun and there was A Lot of Rich and Powerful people there and there was also You. Weiss. Ghyslaine, and Rudeus as well, and Rudeus was actually Holding up well due to Weiss' Training.

Soon the Presents had come around and Rudeus was the first to do so.

Rudeus: Here you go Eris, I got you something.

He then gave her it.

Eris: Thank you.

She then Opened it and It was A Wand.

Eris: A Wand?

Rudeus: Yes, A Wand. I had received A Similar gift from my master for my 10th Birthday, so here is one for you, to help aid you in your Training.

Eris: Thank you.

Y/n: I got something for you too.

You then Handed her The Diamond You made.

Eris: (Blushing) A-A Diamond!?

Y/n: Yep, 24 Karrot in Fact. I thought you could Use it in some jewlery or sell it or... whatever you like to use it for.

Eris: (Blushing) I-It's not what I asked for anyway, but I'll take it...

???: Hold on.

Just then her Mother walked by seeing you give her the Diamond.

Hilda Boreas Greyrat (Eris's Mother and the Wife of Phillip/ She is A Very rich and Powerful Noble woman who married into the Greyrat family)

Y/n: Yes?

Hilda: I had been thinking of this for A While but I had decded on this. Eris You shall Propose, No, Marry Y/n Right here.

Eris: (Blushing) W-WHAT!?

Hilda: Don't think your too good for him young Lady. He's rich, Powerful, Handsome, and He had given you A Diamond of all things. He really cares about you.

Y/n: ... Hold the Phone Broomhilda what Just Happened?

Rudeus: I think you Just got engaged to my Cousin. Don't worry I think she's Like Your girlfriend.

Weiss: I AM NOTHING LIKE- Okay Maybe A Little.

Y/n: No Honey, You had character development. Your A Much better person Now.

Weiss: (Blushing) T-Thank you...

You were now Actually engaged to Eris Just as she turns 15 and She was Just as shocked as you are, but way more flustered as well.