This girl is more forward than I thought she'd be. At first she was so shy in talking to Seiichi alone that she had her friend do it for her. Now, she's come over to his house unannounced (how did she know where he lives?) and wants to go straight to his room. If Seiichi had sat down next to her on the bed, it is doubtless that she would have made a move on him, lol. She must have had some feelings for him longer than he realized. Did mom take a taxi home?