First story:
Fumi's adorable but I feel really bad for him because Satake keeps treating him badly… but it's better in the end because he sort of accepts him :3
Second story:
Really cute I loved it and Oda is a really great friend because who wouldn't lock their friends in a room so that they can make out??? XD
Third story:
Omf this broke my heart poor Haijima… Even though Shizumu didn't know of Haijima's feelings for him, it's a reaaaaaal dick move inviting your girlfriend to a "date" with your best friend. Although I'm glad that Haijima chose Hachiya in the end and didn't get too hung up on Shizumu.
Overall it's all really cute X3
Ouji no Kikan