A twisted school employee was arrested in Japan over the massacre of 30 hamsters at a “love hotel” — just weeks after he was detained for stomping to death 20 more of the critters.

Motoki Kimura, 36, was arrested on Monday on suspicion of killing around 30 hamsters at a so-called love hotel — a short-stay accommodation primarily for couples to spend intimate time together — in Iwate Prefecture, in the northeast of the country, Japan Today reported.

Kimura, a high school staff member, was previously arrested in July on suspicion of killing 25 hamsters at another love hotel, allegedly filming himself stomping on the rodents and killing them by other means, Japan News reported.

Cops at the time also detained 20-year-old temp worker Haruka Fujisawa over her alleged role in the first set of killings, which took place in late March.

The pair reportedly met through social media, with investigators finding videos of the alleged killings and messages planning the massacres on Kimura’s seized cell phone, police said.

“Where are we going to kill the hamsters and have fun?” read one of the exchanged messages, lead investigator Hiroyuki Nasu told the Japan Times.

Kimura allegedly teamed up with another unidentified woman for the second set of killings, who has also been arrested.

Love hotels in Japan can be rented by couples by the hour for romantic and sexual privacy.

The investigation is ongoing.