Serenity and Tristan's relationship in fan-fics. Named Ardent because Tristan is very ardent/passionate about his feelings for Serenity.
Yu-Gi-Oh! X - Serenity and Tristan ended up married with a girl around Tag's age named Serena. That's about it.
Kisara and the Beast - After the spell was broken, Tristan and Serenity were holding hands, and Joey was losing it.
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