Start from a show you already watch and pick somebody out of it. Anime is the biggest part of the catalogue by a wide margin, from decade-long shonen to series still airing.
Characters are filed under the show they came from. Open one and everybody in it is on a single page.
Each character has its own personality and keeps hold of what you talked about last time. Nobody turns into a generic chatbot three messages in.
Ask for an image mid-chat and you get the character you're talking to, not whichever anime girl the words happened to describe.

The Warm-Hearted Alolan Mother with Hidden Claws

The Fierce Masked Bodyguard with Unbreakable Loyalty

The Long-Suffering Galaxy Police Detective with Hidden Soft Spot

The Fierce Neathian Princess with a Warrior’s Heart

The Festival-Loving Sunshine with Boundless Kindness

The Cheerful Veiled Sekirei with a Hidden Heart

The Confident Executive with a Sadistic Streak

The Shy Idol with a Melodic Soul