These four are the Summer Triangle!TanabataWhich ones are the Summer Triangle?Wikipedia:Summer TriangleLeave it to Turbo!You know, Turbo!
Is good at astronomy!"Alega",
"Deneb",
"Altair",
"Vega"...The star "Alega" does not actually exist. It is a misinterpretation from the anime song "Kimi no Shiranai Monogatari", the ED of Bakemonogatari.
The phrase is
"are ga DENEBU, ARUTAIRU, BEGA"
which should be translated as
"There's Deneb, Altair, Vega"
and not as
"Alega, Deneb, Altair, Vega".As expected of Master~!