ComicFesta's upcoming ecchi romcom Otona no Koi no Shikata ga Wakaranai! (Adults Are Clueless About Falling in Love!) shows off its theme song and a little more in a pair of new trailers.

Based on Tamami Katsura's manga, the story follows a pair of overworked office workers in their 30s: Mio Sudo and Shuji Majima. It's been a while since either have felt love or gotten laid, but after their paths cross at a matchmaking party, they find what they were missing in each other.

As you may know by now, ComicFesta typically release their lewder anime in two forms: a SFW version for TV broadcast, and a NSFW version complete with more graphic sex scenes and a different voice cast for online streaming. Here's the trailer for the former:

And here's the too-hot-for-TV trailer:

Majima's TV voice actor, Kent Ito (Michio Hazama in The Idolm@ster SideM) performs the theme song Yoru ni Kekkai in the TV version with a "dignified singing voice". Likewise, "Chasuke" (Masaki Ichihara in Heartwork: Love Guns) utilizes his "sexy singing voice" to set the tone for the premium version. Mio Sudo is voiced by Kaede Yuasa (Kanchal in Interspecies Reviewers) in the standard version, and "Yuzu-Hachimitsu" in the premium version. 

Otona nya Koi no Shikata ga Wakaranee! releases on October 4; with the TV version airing on Tokyo MX and the premium version streaming on the ComicFesta website. Are you looking forward to it? Which is your favorite ComicFesta anime so far? Let us know in the comments!