しみとうっみとおっちゃう
shimito ucchau

Godan Verb (ru)
Godan Verb (u)

The completive aspect (contracted form) - indicates completion or regret of 染みとおる

1. be stained; be soaked; be permeated; regret staining; regret soaking; regret permeating

Completed Action
Colloquial