It's not the massage that Katsuki loves, that got her hooked, it's the boy and the way he gives it to her, she would like to go beyond the massage , but she knows it's way to early, and she has to get Sagara to help, she can't do that until he confesses to her, and she's starting to feel like it won't happen soon, even though she keeps throwing hints, she's just going to have to keep him on the hook by having him give her massages, until he gives up and cofesses, she doesn't know how he feels about her, or how what happened with Nishino in the past affected him.

マッサージすることで関節の可動域がかわる。
つまり合体ロボが出来る。変形ロボでも可。

マッサージ増やせって言ってるやつはえっちぃですね！

そうですね。じわじわ近づいていく二人を見てるのは楽しいですね＾＾

…しかし、香月ちゃんの体調管理のために、マッサージは定期的にしなきゃね！ｗ
体調管理のためにね！（大事なことなので２回…）