Play Rosario To Vampire - Tanabata No Miss Youkai Gakuen (J) Online

Rosario to Vampire: Tanabata no Miss Youkai Gakuen is a 2008 Nintendo DS game from Konami, based on the anime and manga series. It came out during a time when the DS was full of quirky Japan-only titles, and this one fits right in with its mix of school life and monster-filled adventure.

You play as Tsukune Aono, a human student trying to survive at a school for monsters. The main goal is to navigate daily life and supernatural events tied to the Tanabata festival. You explore the school and its surroundings screen by screen, engage in turn-based battles against various creatures, and make choices in dialogue scenes that affect relationships with other characters. The pacing is fairly relaxed outside of combat, but some monster encounters can be tricky if you're not prepared. It feels like a light, sometimes silly visual novel with just enough RPG elements to keep things interesting.