Familiars/Animal Sidekicks

And we have a snake summons, chapter 19.
"Stagnant Water" a name used to describe gamers obsessed with a single game. Our MC is such a person. Pushing his luck, he ends up somehow going back in time to when the game he's obsessed with first comes online. He takes it as an opportunity to get all the good loot and make a name for himself. He's a cocky shit, but he's so much fun!

Estrella, our MC, seems to have a special knack with animals. She's got a a cat, a snake, a bunny (a gift from one of her brothers), and a baby dragon!
A child forgotten about, due to the nature of her mother's clan, she's discovered and taken in by her father the emperor.

It takes a while, but soon the MC gets a phoenix as a contracted beast. There's another beast to later on.
MC's brother is betrayed while climbing a tower. He takes up the challenge of climbing the same tower in search of getting revenge for his brother.

The MC, Roxana, uses venomous butterflies that she hatches and raises herself.

Takes a few chapters, but there is a little dragon that appears.
Our dear FMC is reincarnated into another world as a "chubby" character, who just so happens to be engaged to a VERY powerful person. So starts her journey to become stronger, lose weight, and take control!