The ending of Rurouni Kenshin manga is bittersweet. Kenshin finds some peace after facing his past demons, but there's a sense of closure and reflection.
The Rurouni Kenshin anime is quite faithful to the manga. Some minor changes are made for better visual presentation or to fit the animation format, but the core story and characters remain intact.
The Rurouni Kenshin anime is decent, but it does have some differences from the manga. The animation style and pacing might not please everyone. However, both have their unique charm.
The fanfiction titled 'The Bonds Beyond the Sword' is worth reading. It explores the bonds between all the main characters in a very heartwarming way. It shows how their relationships develop over time, not just in terms of fighting side by side but also in their personal lives. And 'Kenshin's Hidden Strength' is a great read as well. It uncovers a new side of Kenshin's strength, not just his physical sword - fighting abilities but also his inner strength and how he uses it to overcome new challenges that are different from the ones in the original story.
You can try some popular fanfiction websites like FanFiction.net or Archive of Our Own (AO3). FanFiction.net has a large collection of various fanfictions, including those of Rurouni Kenshin. Just search for 'Rurouni Kenshin' in their search bar. AO3 also has a great selection. It has a well - organized tagging system which makes it easier to find the specific type of Rurouni Kenshin fanfiction you're interested in, whether it's about a particular character or a certain plotline.