Ho Yay / Beauty Pop

• You could arguably get hints of this from Narumi-papa's attitude towards Seiji, particularly with the constantly-drawn parallels between the prior generation (Seiji and Narumi-papa) and the current one (Official Couple Kiri and Narumi Shogo). Possibly why they explicitly re-draw the parallel at the end to compare the older guys to Narumi and Ochiai instead.
• Either this or severe Hero Worship in Ozawa's case: Although an otherwise unflappable Jerkass, Kiri's inherited-from-her-father cutting techniques are instantly recognized by him. Following the announcement that Kiri is the Seiji Koshiba's daughter, we find out that Ozawa has posters of Seiji in his room.
• Also, Ochiai and Narumi, Kei and Narumi, Ochiai and Kei.