Metto Quest starts with Wagan in Inside Yuno (17, 30). The steps below are read from the quest's script on this server, in the order the script's quest stage moves through them.
Walkthrough

1 Talk to Wagan in Inside Yuno (17, 30)
When At the start; Class is not Novice Choose “Leave it to me.” For science, he's destroyed public facilities, has been the cause of noise and air pollution and generally disturbing the peace...
And he's justifying his behavior under the excuse of research! He's a crazy fellow who's taken it too far!
I wish there was a way that we could stop him from wrecking it for the rest of us. Some brave, daring soul should be able to do something...
Script:
npc/quests/quests_yuno.txt:185· metto_q = 1
2 Talk to Metto in Inside Yuno (26, 39)
When After step 1 Script:
npc/quests/quests_yuno.txt:53· metto_q = 2
3 Talk to Stangckle in Inside Yuno (17, 95)
When After step 2 Choose “I'm here to stop your research.” What can I do for you? My colleague Metto is coming here soon, so I don't have much time. So what did you say you needed?
Script:
npc/quests/quests_yuno.txt:266· metto_q = 3
4 Talk to Metto in Inside Yuno (26, 39)
When After step 3 Script:
npc/quests/quests_yuno.txt:61· metto_q = 4
5 Talk to Kato in Inside Yuno (19, 183)
When After step 4 Choose “I want to stop you from making a mistake.” I am a scientist researching all sorts of things.
Of course, my research is private and confidential. But is there anything I can do for you?
Script:
npc/quests/quests_yuno.txt:331· metto_q = 5
6 Talk to Metto in Inside Yuno (26, 39)
When After step 5 Script:
npc/quests/quests_yuno.txt:83· metto_q = 6
7 Talk to CiCi in Inside Yuno (178, 43)
When After step 6 Choose “I want to warn you.” My name is CiCi. I am one of the three great scientists in this city.
There are many great scientists in this city, but being in the top three is a true honor. Don't you agree?
Well, I think I've bragged a little too much now, what can I do for you?
Script:
npc/quests/quests_yuno.txt:383· metto_q = 7
8 Talk to Metto in Inside Yuno (26, 39)
When After step 7 Script:
npc/quests/quests_yuno.txt:103· metto_q = 8
9 Talk to Wagan in Inside Yuno (17, 30)
When After step 8; Class is Sage; Script check: not (MaxWeight - Weight) < 300 You get 10 ×
Yellow GemstoneThank you for your help. Because of your work in ridding us of Metto, we have one less worry.
I'm sure the people of Juno are very thankful. Here is a little token of our appreciation...
I wish you luck in your future endeavors...
Script:
npc/quests/quests_yuno.txt:236· metto_q = 9
10 Talk to Wagan in Inside Yuno (17, 30)
When After step 8; Class is not Sage; Script check: not (MaxWeight - Weight) < 150 You get 5 ×
Blue GemstoneThank you for your help. Because of your work in ridding us of Metto, we have one less worry.
I'm sure the people of Juno are very thankful. Here is a little token of our appreciation...
I wish you luck in your future endeavors...
Script:
npc/quests/quests_yuno.txt:245· metto_q = 9
Rewards over the whole quest
10 ×
Yellow Gemstone; 5 ×
Blue Gemstone
How this page is made: every step comes from the NPC scripts the server loads for Episode 13.2 (the file and line are under each step). "When" lists the checks the script makes before that branch runs; "Have with you" are the items it counts; experience from getexp is multiplied by the server's 50x quest rate. NPC lines are the script's own text.