Crossover Anime: Starting by fusing with an old sword and summoning Morgan

[Anime Crossover] + [System] + [Multiple Heroines] + [Decisive and Ruthless]
Luo Chen transmigrates to the Type-Moon world and awakens the [Dimensional Template System].
At the start, draw the [Arthur Pendragon (Old Sword)] template and obtain the Crimson Dragon Heart and the Thirteen Binding Holy Sword!
What's the first thing to do after landing?
He set fire to Matou's dirty inkstone, stepped on a wormhole, and saved Sakura to be his little sister!
In order to participate in the Holy Grail War, he summoned a Heroic Spirit, but what appeared was—[Fairy Queen Morgan le Fay]!
Morgan: "Arthur? Since it's you, isn't it only natural for my wife to dominate you?"
Luo Chen: "...Wait, I'm the Master, you're the Berserker, please calm down."
When the two King Arthurs meet in Fuyuki.
Artoria Pendragon: "Why are you a man? And... your curry stick is thicker than mine?"
Gilgamesh: "You bastard! Why is your Noble Phantasm able to suppress my Ea?!"