In this post I am going to analyse the two young girl characters in 'Oyako Neburi~ Sasou Hitozuma Dakaretai Oyako' based on the archetypes presented in 'How to Draw Anime and Game Characters Vol. 5: Bishoujo Game Characters by Tadashi Ozawa' and 'More How to Draw Manga: Mastering Bishoujo Characters'. While 'Mastering Bishoujo Characters' isn't about games, it presents the same archetypes as 'Bishoujo Game Characters'.
Ryouko has elements of ‘The Heroine’ and ‘The Princess’ in ‘Bishoujo Game characters'. She has long straight hair and the gentle countenance of the Heroine. However, she also has the reserved, vulnerable body language of the 'Princess', particularly the shy variety Ozawa shows in Chapter 2.1. In ‘Mastering Bishoujo Characters’, she’s a mix between the Reserved Girl and the Vulnerable Girl. 
Ren is trickier to decipher. She fits no concrete character types in ‘Bishoujo Game Characters’. She’s more confident than the Heroine, more reserved than the Smart Aleck and more “mature” than the Cute, Younger Girl”. Yet in ‘Mastering Bishoujo Characters’, she fits the role of ‘The Cutie’; large eyes, curly curtained hair and a round face. However, although her eyes are upward slanted, there’s still a confident look in her expression. Still, ‘The Bubblehead’ seems to describe her. Despite her sexuality, she acts like a child and talks with a babyish voice. Tadashi Ozawa writes that “An ‘open pose’ (with the feet apart and hands raised above the shoulders) is used to suggest an outgoing, extroverted personality, and a ‘closed pose’ (with the hands held lower than the shoulders, the arms either crossed or hands clasped or hidden, and the knees together) is used to suggest a reserved, introverted personality.” Ren’s hands are never raised above her shoulders, but she always projects an air of confidence and her “crying” sprite evokes Ozawa’s “Cute, Younger Girl” archetype, particularly the RPG design seen in Chapter 2.2. This odd combination of character traits makes her stand out from all of the other childhood friend characters in visual novels and bishoujo games.
In conclusion, Ryouko fits many elements of archetypal heroines as shown in both the books, almost an ideal example of Japanese beauty, while Ren is more eclectic and unique.
