2-nen 2-kumi no Stadium Girl - Vol. 1 Ch. 1

[MangaDex]

 

[HeatManga]

 

[GlyphXion]

Greatest manga of all time just dropped

 

[outinthegardener]

Fun start! Same author as Ballpark de Tsukamaete!, but it has a different vibe.

 

[MrTurtleMan]

So it's an "I look plain but I'm secretly an idol" manga except instead of idol it's a cheerleader (but the cheerleaders are also idols)