Glad to see a non - wuss MC on the level of Akamatsu MC's or the rent a gf MC I'd pass.
The girls though this just me off my rocker here.
Ouka - young Tsubasa
Akane - young Tama
Shiragiku - Mayu in Nanami's body while retaining Mayus breast size
Riho - Rin
Ami - Asuka in Sara's body