User blog comment:B214/Kuoh Academy students finding out that Issei stays with the ORC girls and is dating Rias./@comment-4547267-20131217014928/@comment-141.136.225.54-20160823183225

About Ise having a bath with Grayfia, he was terrified the whole time. Althought she is a super beauty,she is also a Satan class devil who can get the Super Devil Lucifer to obey her. Ise probably thought that if he made a wrong move, he would be vaporized.

About Sirzechs finding out about Ise having a bath with Grayfia who was drunk, I don't think he would be angry because he knows how his wife acts while intoxicated. Althought, it would be funny if Sirzechs said that the four of them (Sirzechs, Grayfia, Ise & Rias) having a bath together may a fun idea.