This manga is truly sweet, even makes an incredibly tense moment that could lead this story into a long arc of drama into a moment of pure beauty. Minori Chigusa is too great for us.
Suuna really did well to defuse that situation, girl definitely can protect her bottom wife Ruka.
Rin was, and still is, an asshole, but it seems just like Ruka says, she first was empty, seeking for anything that filled her. Unfortunately, the way she coped with it was wrong and harmful to others and by the time she realized she actually was in love with Ruka, she already had caused way too much harm.
At least Ruka can now start the long process of building a real relationship with Suuna. And one that is calm and flowing, with a girlfriend just as learning as her.
Anyway those last five pages are just perfection. My heart just melted from that scene.
Houbunsha! Give this a multi-season anime adaptation already and my life is yours!