It is very rare when players of "Pokemon Sun and Moon" can capture shiny Pokémon. Many players have played for a decade but never captured a shiny Pokémon and chances of encountering it in the wild is less. But if the player really wants to catch there are some an easy ways to do so.
For that "Pokemon Sun and Moon" player needs to catch a monster. Although this procedure is time consuming the process is not very complicated. After picking up the target, stock up. In the process there will be need of healing items, PP-replenishments, revives and most importantly Adrenaline Orb, as per Kotaku.
The next step is to face the monster which the player want in shiny form. Then use an Adrenaline Orb that will make the target call for help. Repeat the same battle to weaken the target's health. But do not kill it. Once the second monster appears, kill one of them and let the remaining one call for help. In this way, more and more new monsters will be called the chain will be enhanced. Eventually, a "Pokemon Sun and Moon" player may encounter a Shiny Pokémon. Some shiny chains might take hundreds of calls for help but if the player is lucky it might take fewer calls.
Yahoo! suggested following five simple steps to capture shiny Pokémon. Firstly, the player should save the game after the encounter with Tapu Kaku at the bridge. Secondly, the player should talk to Lillie who is standing between two totems at the bottom of the screen. Thirdly, after talking with Lillie cutscene begins which let the player choose the starter.
The player will now know whether it is shiny Pokemon or not while nicknaming the starter. Fourthly, if the starter is not shiny, the game should be reset. Fifthly, for soft reset the player must hold L+R and then press start or select. Though resetting repeatedly is a painful process a shiny Pokémon is worth all these pains.