I don't own The 100, only Alessa. I'll try to give facts about Alessa in every chapter without giving away anything major, only little innocent things...

Fact : Alessa hates Titus with a passion from the moment she first saw him.


4 YEARS LATER

"Alessa, wake up! Em's time kom train. Onya will kill yu taim yu laik late again. Alessa!" Lexa sighed exasperated with her sister's attics. Every morning she overslept and Anya would punish her.

Lexa shook her head and smiled – they might not be related by blood, but she would be lying if she said she didn't love her. With one short move, Lexa pushed the older girl on the floor efficiently waking her.

"…Lexa… Chit ste the meaning gon disha? What is so urgent that you had to kick me, painfully I might add, so early in the morning?" she asked calmly.

Alessa was always like this – calm, but deadly and unpredictable. She was one of the few that could fully control her emotions even in a state of near death, something Lexa didn't fully mastered yet. The Commander studied her sister – her green eyes were piercing through her despise the warm smiled she had given the younger girl; her hair was as neatly put together as always. Lexa's attention shifted to her clothes and she frowned, her sister had, once again, fallen asleep in her seken uniform.

She couldn't help the cold from her voice as she eyed her sister "Alessa, did you train until you collapsed, again?"

If Lexa hated one thing it was her sister not taking care of herself. It was one when Anya – a skilled and veteran trainer, tells them to train until they can't lift their swords once a week, but training until you reached your limit daily beside their usual was very dangerous. She couldn't help, but worry for the brunette as she had, more than she'd wish, visit Naikou after collapsing from exhaustion.

"Lexa, ai laik fine. Trust ai, okay? I was just tired and, since I've done it before, I though one more time won't do much harm… Besides, I got all my weapons off me."

Alessa didn't dare look at Lexa. She knew that the moment she turned around will be the moment she would come clean to her sister so she focused on collecting all her daggers and her two swords from around the bed.

"Alex, look at me."

This was it – the Heda's voice, the voice Alessa couldn't do anything against, the voice Lexa rarely used when it was just them. She knew she was in big trouble, not only because of Lexa, but Anya would beat her to an inch of her life if she found out that she disobeyed her order to rest for the million time.

"If I turn around…promise not to tell Anya?" she asked shyly.

Lexa sighed "Yes, now come here."

Alessa turned slowly and made her way to the entrance where Lexa stood. She was an excellent warrior, but she just couldn't argue with Lexa – she loved her too much and, yet, she upset her almost every day. She felt Lexa's arm sneaking around her waist, pulling her into a tight hug. She instantly relaxed, she both hated and loved how at ease Lexa's mere presence made her feel.

"Teik's go… Anya's waiting for us."

A groan came from the older girl "Do we really have to?" she asked, smirking.

This was the Alessa she loved – sarcastic, funny, confident and mischievous. Lexa smiled "We'll go in the forest after training, OK? For now, let's survive Anya's training."

She laughed "Like Anya's dumb enough to kill her Commander or the Commander's second…"

The mischievous look that had appeared into the brunette's eyes made her warry. Alessa was one of the kindest people she had ever seen. Yet, the brutality and morbid creativity she hid under it made even her afraid. Yes, her sister was one of a kind – ruthless in battle, kind outside it. She was brought out of her mind by her sister running out her tent.

"Let's go through the forest. Last one there is a weakling!" she yelled before disappearing.

Lexa smirked and whispered "Oh, it's on…" before dashing after Alessa.

6 YEARS LATER

Alessa sighed, of all days they could chose to hold the meeting it had to be today – Costia's birthday. She was beyond furiously mumbling at the Fleimkepa as she walked to Lexa's chamber, her British accent surfacing.

"That good for nothing, old fool! Today of all fucking days, to-fucking-day! I'm going to show him one or two one of this days…"

Her rant continued until she was in front of Lexa's door. She was surprised when she hadn't seen her usual guard there, but brushed it off rapidly after hearing a giggle she would recognize anywhere. She took a deep breath to prepare for any surprise and pushed the door open, not being able to subdue her need to make an inappropriate joke in her accent.

"Getting lucky, eh, sister?"

Lexa and Costia were both on the bed with a blanket over them and, for most, they appeared to be doing nothing out of the ordinary, but Alessa knew and saw better than most. She eyes Costia's shirt on the chair after Lexa's desk and Lexa's armor under the sofa as soon as she stepped inside. They both froze on their spot looking shyly at the older girl.

Lexa took a deep breath to compose herself as she watched her sister collect their clothes – 'Of course Alessa saw our clothes right away…'.

"Sister, please, souda yo otaim do disha? It is not funny."

Alessa smirked as she handed the Commander her clothes with a sarcastic "Hello to you, too, dear sister." Before turning to Costia "You okay, there, little won?"

Costia nodded as she stood up from the bed, fully naked. Alessa didn't mind those kind of thing as she considered Costia family, Lexa, on the other hand, growled and moved to shield her lover from her sister's eyes – not because Alessa would look at her, but because her pride as Heda, Costia was her lover and thus only she was allowed to see her like this unless she needed medical attention.

"Lexa, em ste fine. Alessa ste ai fisa, there's nothing she hasn't seen before."

When Costia turned to apologize to Alessa she was already facing the wall, not looking at either of them. She chuckled, this was the first time Alessa had felt the need to face away from them, but she figured this was more for Lexa than for her – Costia was confident with her looks and she knew better than to think Alessa would ever look at her more than just Lexa's lover.

"As true as that is, you're still Heda's lover. And I'd like to keep the image of you and my little sister screwing each other out of my head, thank you…"

Said girl blushed hard as they hurried to get dressed. Alessa will never let them live this down…

7 YEARS LATER

They couldn't believe this – Costia was death by the hand of Queen Nia of Azgeda. Lexa was barely holding herself together as she leaned on her sister for support, all the time spend training to keep her emotions in check were slowly fading as the reality sink in.

Alessa wasn't doing much better, anyone with half-a-brain could feel the hatred and anger radiating from a mile away.

"We'll get her, Lexa. Ai swear we will avenge them. I will make her wish for death…" she whispered darkly and she held her sister closer.

Lexa didn't trust her voice so she nodded – Gods have mercy on the Queen's fate as she awakened a monster not even her, Heda, would dare face… The wrath of her sister was something everyone feared.

14 YEARS LATER

"Heda, it is not wise to leave the capital with only one guard." Gustus tried to plead with her.

"A i laik nou leaving krom won guard, ai laik leaving krom demon, Gostos. I will be fine with my seken."

Gustus sighed in defeat – her Heda was just as stubborn as her sister. "Be careful, Heda." He said as he left.

"He's very protective of you, isn't he?" Alessa's voice came from behind her throne, making Lexa jump.

"Sister… Yes, ever since C-…her death he has been looking after me like this…"

Lexa shook her head and smiled at her sister – she had become a feared and respected warrior, rivaling even Heda herself. The 24 years old woman wasn't the scared girl she had found wounded in the woods, but her partner, her shield, her sword and her sworn soldier. Her green eyes were capable of reading even the smallest movement and anticipating everything. Lexa was proud of Alessa.

"Lex? You still here?"

The Commander smiled even wider "I'm not the one who spent 5 years alone in the wilderness. I will always be here, Alessa."

"You better me or I'll bring you back from the death just to kill you myself… And let's not talk about that…"

Lexa tried hard not to smirk, but failed "Now come on, we must reach TonDC before nightfall."

Alessa laughed "Aye, aye Heda."


All the skips are calculated from the moment Alessa arrived on Earth so :

4 YEARS LATER = 14 years old Alessa - 12 years old Lexa

6 YEARS LATER =16 years old Alessa - 14 years old Lexa

7 YEARS LATER = 17 years old Alessa - 15 years old Lexa

14 YEARS LATER = 24 years old Alessa - 22 years old Lexa