List of things Rukia did when she walked in on a naked Renji and Byakuya making out

stared motionless and expressionless as a statue up tp the point where Renji wondered if it was ok to continue

Slowly (over the span of fifteen minutes) opened her mouth

Threw up on the floor rather heavily (Byakuya was not so embarrassed as to reproach her for doing so)

Shrieked Renji's name when he tried to help her.

Chased him all over the mansion (still naked)

Chased him all over the Seireitei (still naked)

Sent Sode no Shirayuki into Shikai mode

Kicked Izuru between the legs when he tried to protect her from him by blocking her path

Tried to use Some no mai tsukishiro on him

Chased him into the Rukon (with a series of ice pillars hot on his trail)

Tried to trap him with Tsugi no Mai Hakuren (she only succeeded in catching a bunch of peasants)

Chased him all over Zaraki

Chased him all over Kusajishi

Chased him all over every single district of the soul society

Chased him back to the Seirei tei

Enlisted the help of Yachiru Kusajishi to track him down and bite his head

Carried Yachiru on her shoulders all the way t Renji's location (spent a considerable amount of time searching)

Sicced Yachiru on him

Stood grimly by as Yachiru bit off chunks of Renji's hair and got drool in his eyes

Jonied Yachiru in biting him

Fired several kidos at Renji

Had to be restrained by Kiyone, and Sentaro, and half her squad in order to keep her from using Bankai

Knocked out Kiyone, Sentaro and enough members of her Squad to make them let her go

Used a binding Kido on Renji

Gave Renji a flying kick to the face

Effectively knocked out Renji

Carried Renji all the way to Squad 4's barracks

Got Hanataro to heal Renji so she could beat him up again

Ended up having Gaten used on her by Isane