The Vimana Agama quest is a series of quests that you need to complete as part of the Aranyaka World Quest in the Sumeru region.
The Jadeplum Terrorshroom is one of the 2 New World Bosses in the Sumeru Region.
To ‘upgrade’ the Star Chart, you’ll need to level the Reputation Rank of it, or be unlocking the Pirate Crew Bonuses.
Genshin Impact Sports 3 New World Bosses in the Region.