There are a number of sidequests available in Rainbow Moon, which you get from talking with NPCs during the game. There are two types of sidequests, ones that are completed after doing the task, and ones which are repeatable upon completion. You will get a trophy (Side Quest Master) upon completing 40 sidequests.
(_#1_) REGAINING TRUST
Questgiver: Thierney, located behind the fence next to the Item Shop in Cassar Village
Reward: Daily Grind Armor+
Quest: You need three Sheer Wings, which are dropped by Tiny Bees. You can find them all over Cassar Island, but since they are dropped, make sure to pick up the bags during the battle, since you have a higher chance of obtaining one doing that.
(_#2_) ALCHEMY EXPERIMENTS
Questgiver: Eccmold is lurking behind Stella's garden in Cassar Village.
Reward: TBC
Quest: He wants you to do alchemy research and needs some rare ingredients for that. He asks you for an Imp Horn and a colourful sting which are rare drops from imps and bees.
(_#3_) A PROOF OF STRENGTH
Questgiver: Ryshenn is walking along the West beach in Cassar Village.
Reward: TBC
Quest: She is asking for three imp wings and is able to craft a helmet from these wings. You can bring her more wings for another helmet.
(_#4_) BAROB'S BELT
Questgiver: Barob, a guy from Wind Coast.
Reward: TBC
Quest: Barob has placed his belt in Gorodo's house. A huge skeleton blocks the way to the belt. Grapple with these monsters and being Barob his belt.
(_#5_) THE FLOWERS
Questgiver: Begajia sneezing at the camp at Wind Coast
Reward: TBC
Quest: Gorodo has gifted his dearest Begajia a wonderful flower bouquet. Begajia is very happy about it but unfortunately it has started an allergic reaction. An Allergy Remedy would help this poor soul. Maybe you can find one in Orad?
(_#6_) THE BEEKEPPER
Questgiver: Jolaja, beekeeper in Orad.
Reward: TBC
Quest: Because of the monsters, she can't do her job anymore. Bring her honeycombs to gain a little reward. You will find most of the honeycombs in Hopper Forest.
(_#7_) YOUNG MERCHANTS 1
Questgiver: Duwas and Iatshy, two young merchants in Orad.
Reward: TBC
Quest: They are trying to set up shop. Help them by bringing them six pieces of Copper.
(_#8_) LOST IN FOREST
Questgiver: Thoras, in Hopper Forest.
Reward: TBC
Quest: Thoras has lost his family. Thoras and his wife Vairaina with her daughter got seperated after an attack. He could escape to Orad. Thoras hopes that his family is still somewhere in Hopper Forest. Try to find them to get out. Thoras gave you a shawl from Vairaina as identification.
(_#9_) THE WELL
Questgiver: Nenea, the herbalist in Hopper Forest.
Reward: TBC
Quest: Deep in Hopper Forest is a small house. Nenea lives there. She worries about a well nearby. A group of dangerous monsters live inside. Go to this well South-West of Nenea's House. See if you can expel the monsters.
(_#10_) THE HERBALIST
Questgiver: Nenea, the herbalist in Hopper Forest.
Reward: TBC
Quest: This time Nenea is collecting mushrooms. Bring her as many Red Mushrooms as possible. She will always have a reward for you.
(_#11_) THE QUEEN BEE
Questgiver: Jewom, Ocher Stone Swamp
Reward: TBC
Quest: One dweller is fighting against the imp plague in Ocher Stone Swamp. Jewom needs your help to defeat the imps. Before you are going to attack the beast collect two imp horns for Jewom.
(_#12_) CRYSTAL FIELDS
Questgiver: Darrak, Moss Stone Swamp
Reward: TBC
Quest: Darrak is a poacher. If you gain his trust, you will hear something about the crystal fields and their secrets. First, you have to find Darrak's Gear. Later he needs three strange Oozes.
(_#13_) CRAZY OLD MAN 1
Questgiver: Crazy Old man, Narrat. Dripstone Cave, a dungeon in Hopper Forest.
Reward: TBC
Quest: Narrat is talking nonsense most of the time it seems that he has lost his hiking stick in the cave. Do a good deed and bring back the old man's hiking stick.
(_#14_) MOUNTAIN HUNT
Questgiver: Hunter in Shadow Wall Mountains.
Reward: TBC
Quest: If you bring him iron claws from the Dazed Stare monsters you can get a reward. You can do this as often as you like.
(_#15_) ???
Questgiver: ???
Reward: TBC
Quest: ???
(_#16_) SNOW HUNT
Questgiver: Hunter in Windy Snowland
Reward: TBC
Quest: Trade with the hunter for living rocks and you will get a reward. Mostly golems will drop these kind of items.
(_#17_) CONFRONT THE DANGER
Questgiver: Rafdel is outside a trap in Windy Snowland.
Reward: TBC
Quest: A group of merchants are trapped in the mountains of Windy Snowland. Rafdel asks you to free them.
(_#18_) THE EXPELLED PERSON
Questgiver: Tenan, the only human in Wide Steppe.
Reward: TBC
Quest: Tenan is hiding in the mountains. He is thankful for your help and has given you a ladder to gain access to a camp in the West from his location. If you comb through the camp, you will find a lot of useful stuff. You can keep all the things but Tenan would be happy if you bring him his bag.
(_#19_) THE CHAMELEON
Questgiver: Magician in the Cave Of Ancestors, a dungeon on Green Heart Isle.
Reward: TBC
Quest: You have met a magician in the cave of the ancestors, a dungeon on Green Heart Isle. The magician has changed his appearance to get two objects which are hidden in the dungeon, but the monsters can identify that Qalan is human. He offers you something special for Serena if you bring him the Red and Blue Fragment.
(_#20_) THE ROBE HUNT
Questgiver: A hunter in Tscha
Reward: TBC
Quest: Tscha tries to banish some of the evil magicians. You can help him. If you bring him three cursed robes, he will give you a very helpful reward! You can do this as often as you want.
(_#21_) THE SAILOR
Questgiver: The sailor Yeachtan has lost his packages. You will find him near the portal of Taswan.
Reward: TBC
Quest: The packages are spread all over Tscha, Arilla and Mordan. When you collect all 12 packages for him, you will get a huge reward.
(_#22_) THE TWO FRIENDS
Questgiver: In Tscha, Leylon and Royan and two good friends.
Reward: TBC
Quest: Leyon has a lot of work to do. Royan is missing his friend. See if you can help them.
(_#23_) LIFELESS STONES
Questgiver: Ed Orable in the West Of Cassar Island
Reward: TBC
Quest: Ed Orable is looking for special stones, called Lifeless stones. The stones may be lifeless now but long ago...maybe they have been part of a monster type? And which one could that be? If you find this type of stone, bring it to Ed.
(_#24_) THE GREAT LABYRINTH
Questgiver: Fenore (lost some stuff in the great Labyrinth)
Reward: TBC
Quest: She especially wants her old heirloom back. She also lost her singing bowl but it is in the hands of cruel monsters. If you can get it back from Terz, it's yours. This dungeon is in the east of Taswan.
(_#25_) FLOTSAM AND JETSAM
Questgiver: Iaomy from Taswan
Reward: TBC
Quest: Iaomy lost an important ring when she got shipwrecked. Help her with getting back all the lost Flotsam and Jetsam that can be found on the isles of Tscha. She hopes to find the ring in the Flotsam and Jetsam and will reward you for every piece. Iaomy also has a bag of Enchanted Sand. Maybe she will hand it over if you are nice to her?
(_#26_) THE FLOWER WOMAN
Questgiver: Flower woman of Polad, Telija
Reward: TBC
Quest: Telija will give you a reward for Mystic Oleander petals. You can find these petals scattered all over Arilla.
(_#27_) BIG GOLDEN STATUE
Questgiver: Merchant in Polad, Kri-lo
Reward: TBC
Quest: A merchant in Polad who supplies the shops of Polad can ask the owners to offer new items. Bring Kri-lol the Big Golden Statue from the Mining Shaft, a dungeon in the east of Mordan. It should be somewhere on the first floor. To obtain access to this dungeon, you have to fine Min-Fier in the easternmost part of Mordan.
(_#28_) ???
Questgiver: ???
Reward: ???
Quest: ???
(_#29_) LOST IN DARKNESS
Questgiver: Rouken in Felad
Reward: TBC
Quest: Once, Felad lived with his father in a house outside Felad but when the monster plague came to Arilla they got seperated. Rouken fled to Felad but he lost contact with his father. Rouken thinks that his father Limwar is still alive. You find their house in north-east of Felad somewhere in Green Shimmer Forest. Investigate the property and see if you can find Limwar.
(_#30_) THE REMEDY
Questgiver: Rouken in Felad, Help Limwar to become human again
Reward: TBC
Quest: You have found Rouken's father in the basement of their house in Green Shimmer Forest, but he has made a bad tranformation. Limwar isn't human anymore. See if you can help him become human again.
(_#31_) PROTECTION FOR FELAD
Questgiver: Hunter Kolan, Felad
Reward: TBC
Quest: Kolan has to expel Rotten Meats. If you help him and bring him ten rotten leathers, he will share his profits with you.
(_#32_) FOREST HUNT
Questgiver: Hunter in God Ray Forest in Arilla
Reward: TBC
Quest: Bring the hunter ten frozen tears and he will give you a reward. You can repeat this as often as you like.
(_#33_) CRAZY OLD MAN 2
Questgiver: In Felad, you meet Narrat again, the crazy old man.
Reward: TBC
Quest: This is your old friend from Hopper Forest. Although he is gibbering, it seems that he is searching for an old fragment. Look for the fragment in the north of Green Shimmer Forest.
(_#34_) ???
Questgiver: ???
Reward: ???
Quest: ???
(_#35_) ???
Questgiver: ???
Reward: ???
Quest: ???
(_#36_) The Cold Winter
Questgiver: Bur-Dalon is happy with as much Firewood as you can bring him.
Reward: TBC
Quest: The people of Polad need Firewood to heat their houses. Bring the Forester enough Firewood so that Bur-Dalon can make a fire. Bur-Dalon is happy with as much firewood as you can bring him.
(_#37_) Ice hunt
Questgiver: A hunter is chasing Backslider to the the West of the Vast Snowland
Reward: TBC
Quest: Bring him six stolen helmets to support his hunt. You can do this as often as you want.
(_#38_) Hard Liquor
Questgiver: Nat-Tem from Polad
Reward: TBC
Quest: Naf-Tem is after hard liquor. This is none of your business but Gorodo is claiming to have a gulp of this drink. Naf-Tem also gave you a hint for your material search. He thinks that the Marauders have Dirty Fingernails. You can find them everywhere in Mordan but hegives you the advice to start in the Teardrop Mountain region.
(_#39_) ???
Questgiver: ???
Reward: ???
Quest: ???
(_#40_) ???
Questgiver: ???
Reward: ???
Quest: ???
(_#41_) THE BOYFRIEND
Questgiver: Elaanih, Vairaina's sister. Polad, outside the walls.
Reward: TBC
Quest: Elaanih escaped with Vairaina's daughter to Mordan. Elaanih and her new boyfriend Juulaan have settled outside the walls of Polad. They are pretty happy but besides the monsters Juulaan starts confusing some things. By the way, where is the dog?
(_#42_) THE BOYFRIEND
Questgiver: In Polad, Mai-Pai
Reward: TBC
Quest: Mai-Pai lost her husband on a journey through the Bunring Steppe. Under mysterious circumstances, he didnt come back from the dungeon called Murky basement. Sol-Sora and Ley-Fryn are trying to help her as far as possible.