Staying with rin has got isagi's personality a little more twisted not that it was better before. Isagi, leave your husband, leave leave your husband,,, leave your husbandddddd ~ (Rin)
I 'm guessing 1) Either she was na old friend or colleague of mc 2) she's the same person who was texting the ml, messaging him repeatedly etc and came to know about mc through him and wants to torture him or something?. Either way please leave the mc alone
NO ITS NOT THE TIME TO SAY GOODBYE , Don't goooooo