Chapter #1.0

マルスのたびだち
マルス is "Marth"
の is the possession particle
たびだち is "Setting off" ("Quest")

Marth's Quest

Prince Marth, Princess Shiida
has arrived from Talis Castle.

マルスおうじ
タリスじょうから　
シーダさまがこられました

おうじ is "Prince" / じょう is "Castle"
シーダ is "Shiida"
さま is a more respectful version of さん
が is a subject particle
こられました is "Came"

こられ means "Come" when used in the
past tense with ました it means "Came"
So Shiida has came from the castle.

じょう only means castle in place names
so it's "Talis Castle"
Castle on its own is しろ



What's wrong Shiida
has something happened
at the castle?

どうしたんだ
シーダ
しろでなにかあったのか

どうしたん is "What's Wrong"
だ indicates past or completed action
どうしたんだ would be "What Happened"
で is a location particle meaning "In, At, On"
なにか is "Something"

あったのか is weird (=O=
Basically あう means "To have a Bad Experience"
あった is あう used in a past tense.
so あった is "To have had a Bad Experience"
のか is a particle for an Embedded Question
So basically your saying "Has something happened"
Rather than "Did something happen?"



Prince Marth, I'm so happy to see you
The pirates of Garuda suddenly attacked us

マルスさま あえてよかった
ガルダのかいぞくが
とつぜん おそってきたの

あえて is the Te form of あう which is "To Meet"
よかった is "Glad"
ガルダ is "Garuda"
かいぞくが is "Pirate"
とつぜん is "Suddenly"
おそって is the て form of おそう
おそう is "To Attack"
きた is "Came or It's Here"
おそってきたの would be "They Attacked"