If it wasn't for Rin's kindness and sincerity who was persistent in caring for the injured Sesshomaru (even when Sesshomaru had rejected her), we would not have met the current Sesshomaru. It is thankzs to Rin's beautiful smile that change something in Sesshomaru's heart.
You always hold her as tight as you could, as much as you could.. It's like, if you loosen your hold on her just a little bit, then she'll disappear forever from you.. That 14 years without her in your arms must be like hell for you 🥺