Sumomomo Momomo: The Strongest Bride on Earth: Iroha Miyamoto (Part 1 of 2)

 Iroha is a member of the zodiac family associated with the snake.  Once the most feared family its reputatiation has declined under Iroha's fathers reign.  leading to Iroha to attempt to assasinate Koshi to restore her family's reputation.  However, she develops a crush on Koshi and a freindship with Momoko instead.

(Iroha disguised as Momoko)