When you get interval scenes, sometimes it will say, "Would you like to spend the night?". Respond "No" and you will not get an interval scene. If you say "No" to all of the optional interval scenes you should only spend one scene with each of the five main characters. When you switch places with Utsugi and you go to Naraku's castle, the game gives you the option to find the others or tell Sesshomaru about Rin. Choose "Tell Sesshomaru about Rin". Then, do all of the random events with Sesshomaru. Random events are when question marks appear on the map screen (instead of exclamation points). The first is in "The Field of Ignorance", the second time around go to "Road to Kasasagi", and the last time go to "Forest to Tsuzumi". In all of these places, if you wander around, you should find Sesshomaru and trigger an event scene. After you do all of this, Sesshomaru's picture should appear when you save your game. At the end of the game you will get the Sesshomaru ending. Note: You may have to do this twice. The first time to unlock or enable it and the second time to actually get it.