The player plays the role of a high school male student. In the winter vacation of the last school year (from 22 December to 7 January), he has to choose one girl to be his girlfriend. There are 15 choices for him to make, some are his classmates and some have to be met in the city. The player has to meet the girls and make friends with one of them until the relationship develops to a point that the girl is willing to become his girlfriend.
- Narusawa Yui (鳴沢 唯): A girl who calls Ryunosuke "elder brother" and who lives with him.
- Mizuno Tomomi (水野 友美): A friend of Ryunosuke since they were children.
- Shinohara Izumi (篠原 いずみ): A good friend of Tomomi. Ryunosuke cannot become the boyfriend of Tomomi and Izumi at the same time.
- Minamikawa Yoko (南川 洋子): A girl who always quarrels with Ryunosuke.
- Kato Minori (加藤 みのり): A girl who works in a tuckshop called "Hiroko".
- Maijima Karen (舞島 可憐): A girl who seldom goes to school since she works as a super star.
- Sugimoto Sakurako (杉本 桜子): A patient of the 88 Hospital.
The following girls are not classmates of Ryunosuke:
- Tsuzuki Kozue (都築 こずえ): A girl who is a schoolmate of Ryunosuke, two years his junior.
- Narusawa Misako (鳴沢 美佐子): The mother of Yui, she lives with Ryunosuke.
- Nonomura Misato (野々村 美里): A girl who works as a tour guide.
- Yasuda Azumi (安田 愛美): A girl who is a young baby-sitter.
- Tanaka Misa (田中 美沙): A girl who comes to Ryunosuke's town during vacation. Misa is also a returning character from the first Dōkyūsei, being a fan favorite.
- Nagashima Sachiko (永島 佐知子): The owner of the Nagashima hostel in Toji Onsen.
- Nagashima Kumiko (永島 久美子): The daughter of Sachiko, she wants to live in city instead of living in the countryside.
- Katagari Mirei (片桐 美鈴): The class teacher of Ryunosuke.
Male characters in the game:
- Saionji Aritomo (西御寺 有友): A classmate of Ryunosuke. He has a rich family, and his relationship with Ryunosuke is not so good.
- Nagaoka Yoshiki (長岡 芳樹): A classmate of Ryunosuke.
- Kaojiri Akira(川尻 あきら): A classmate and good friend of Ryunosuke.
- Tendo Shinkansen(天道 新幹線): The PE teacher of the 88 high school who always torture his students.
- Publisher Official Site (Adult Contents)
- Exclusive Download Ver. Site (Country Restriction)
- Dōkyūsei 2 at GameFAQs
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